{"id":3419,"date":"2025-04-09T22:08:46","date_gmt":"2025-04-09T14:08:46","guid":{"rendered":"https:\/\/fushuling.com\/?p=3419"},"modified":"2025-05-17T22:04:38","modified_gmt":"2025-05-17T14:04:38","slug":"%e5%85%b3%e4%ba%8etaintscaner%e7%9a%84%e5%bc%80%e5%8f%91","status":"publish","type":"post","link":"https:\/\/fushuling.com\/index.php\/2025\/04\/09\/%e5%85%b3%e4%ba%8etaintscaner%e7%9a%84%e5%bc%80%e5%8f%91\/","title":{"rendered":"\u5173\u4e8eTaintScaner\u7684\u5f00\u53d1(2025.4.9\u66f4\u65b0\u81f3v1.2)"},"content":{"rendered":"\n<p>\u9879\u76ee\u5730\u5740\uff1ahttps:\/\/github.com\/Fushuling\/TaintScaner<\/p>\n\n\n\n<p>\u770b\u5b8c\u70b9\u4e2astar\uff0c\u963f\u91cc\u560e\u591a\ud83d\ude2d<\/p>\n\n\n\n<p>\u5982\u679c\u6ca1\u6709\u9759\u6001\u5206\u6790\u57fa\u7840\u7684\u8bdd\u5efa\u8bae\u5148\u770b\u4e00\u4e0b\u6211\u7684\u4e0a\u4e00\u7bc7\u535a\u5ba2<a href=\"https:\/\/fushuling.com\/index.php\/2025\/01\/08\/%e9%9d%99%e6%80%81%e5%88%86%e6%9e%90%e5%85%a5%e9%97%a8\/\">\u9759\u6001\u5206\u6790\u5165\u95e8<\/a>\uff0c\u4e0d\u7136\u53ef\u80fd\u4f1a\u96be\u4ee5\u7406\u89e3\u6211\u540e\u9762\u7684\u601d\u8def\u3002<\/p>\n\n\n\n<p>\u7b80\u5316\u4e86\u7684\u601d\u8def\uff1a<a href=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/taintscaner%E5%8E%9F%E7%90%86.pdf\">https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/taintscaner%E5%8E%9F%E7%90%86.pdf<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u66f4\u65b0\u65e5\u5fd7<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2025\/02\/18<\/strong><\/h3>\n\n\n\n<p>\u5f00\u6e90<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2025\/03\/31<\/strong><\/h3>\n\n\n\n<p>\u66f4\u65b0\u81f3v1.1<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5c06\u5206\u652f\u7684\u4e0a\u9650\u8bbe\u7f6e\u4e3a100\uff0c\u8d85\u8fc7100\u4f1a\u8fd4\u56de\u4e3a\u7a7a\uff0c\u9632\u6b62\u626b\u5927\u578b\u9879\u76ee\u65f6\u4f1a\u663e\u793a\u626b\u63cf\u5931\u8d25<\/li>\n\n\n\n<li>\u4f18\u5316\u4e86if\u7684\u89e3\u6790\u903b\u8f91<\/li>\n\n\n\n<li>\u8865\u5145\u4e86\u5bf9foreach\u7684\u89e3\u6790<\/li>\n\n\n\n<li>\u5bf9\u901a\u8fc7dirty_func\u626b\u63cf\u5f97\u5230\u7684\u65b0sink\u70b9\u505a\u4e86\u96c6\u4e2d\u663e\u793a\uff0c\u65b9\u4fbf\u6dfb\u52a0<img decoding=\"async\" src=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F03%2FQQ%E6%88%AA%E5%9B%BE20250331185730-31-6.png\" alt=\"\"><img decoding=\"async\" src=\"https:\/\/camo.githubusercontent.com\/abca1e254650896b561e3b61506a5a2459cfb03c501ba119d30c789866378ba1\/68747470733a2f2f66757368756c696e672d313330393932363035312e636f732e61702d7368616e676861692e6d7971636c6f75642e636f6d2f323032352532463033253246515125453625383825414125453525394225424532303235303333313138313930382d33312d332d2e706e67\" alt=\"\"><\/li>\n\n\n\n<li>\u4fee\u6539\u4e86\u4f20\u64ad\u903b\u8f91\uff0c\u73b0\u5728\u53ea\u4ecesource\u5f00\u59cb\u8fdb\u884c\u4f20\u64ad\uff0c\u5927\u5e45\u5ea6\u63d0\u9ad8\u4e86\u626b\u63cf\u901f\u5ea6\uff0c\u5bf9\u4e8e\u540c\u4e00\u4e2a\u9879\u76ee\uff0c\u6587\u4ef6\u5206\u6790\u529f\u80fd\u8017\u65f6\u53ea\u6709\u539f\u6765\u7684\u4e09\u5206\u4e4b\u4e00\uff0c\u810f\u51fd\u6570\u626b\u63cf\u8017\u65f6\u964d\u4f4e\u5230\u539f\u6765\u7684\u4e8c\u5206\u4e4b\u4e00<img decoding=\"async\" src=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F03%2FQQ%E6%88%AA%E5%9B%BE20250331181454-31-2.png\" alt=\"\"><img decoding=\"async\" src=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F03%2FQQ%E6%88%AA%E5%9B%BE20250331181431-31-1.png\" alt=\"\"><\/li>\n\n\n\n<li>\u4f18\u5316Details\u7684UI\uff0c\u5f53\u4ee3\u7801\u8fc7\u591a\u65f6\u4f1a\u542f\u7528\u5782\u76f4\u6eda\u52a8\u6761<img decoding=\"async\" src=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F03%2FQQ%E6%88%AA%E5%9B%BE20250331182929-31-5.png\" alt=\"\"><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2025\/04\/09<\/h3>\n\n\n\n<p>\u66f4\u65b0\u81f3v1.2<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u76ee\u524d\u652f\u6301\u65b9\u6cd5\u7ea7\u7684\u8de8\u6587\u4ef6\u6c61\u70b9\u4f20\u64ad\uff0cdirty_func\u80fd\u652f\u6301\u8de8\u6587\u4ef6\u7684\u51fd\u6570\u8c03\u7528\u7684\u89e3\u6790\uff0c\u589e\u52a0\u51fd\u6570\u8c03\u7528\u94fe\u7684\u663e\u793a\uff1a<img decoding=\"async\" src=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250409-215608-9-1.png\" alt=\"\"><img decoding=\"async\" src=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250409-221213-2.png\" alt=\"\"><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u524d\u8a00<\/h2>\n\n\n\n<p>TaintScaner\u7b97\u662f\u6211\u7684\u6bd5\u4e1a\u8bbe\u8ba1\uff0c\u5927\u6982\u662f\u81ea\u6211\u4e0a\u4e00\u7bc7\u5173\u4e8e<a href=\"https:\/\/fushuling.com\/index.php\/2025\/01\/08\/%e9%9d%99%e6%80%81%e5%88%86%e6%9e%90%e5%85%a5%e9%97%a8\/\">\u9759\u6001\u5206\u6790\u5165\u95e8<\/a>\u7684\u6587\u7ae0\u5199\u5b8c\u4e4b\u540e\u5c31\u5f00\u59cb\u5f00\u53d1\u7684\uff0c\u5c5e\u4e8e\u521a\u5b66\u4e86\u70b9\u57fa\u7840\u5c31\u5f00\u59cb\u8d76\u5de5\u4e86\uff0c\u7455\u75b5\u633a\u591a\u7684\uff0c\u662f\u4e00\u6b3ePHP\u7684\u6c61\u70b9\u5206\u6790\u5de5\u5177\uff0c\u521d\u5fc3\u5c31\u662f\u60f3\u8981\u5b9e\u73b0\u4e00\u4e2a\u80fd\u591f\u5feb\u901f\u5339\u914d\u4eceSource\u70b9\u5230Sink\u70b9\u8def\u5f84\u7684\u5de5\u5177\uff0c\u6240\u8c13Source\u70b9\uff0c\u5728PHP\u4e2d\u5927\u6982\u5c31\u662f$_POST\u3001$_GET\u8fd9\u7c7b\u53c2\u6570\u76f4\u63a5\u7531\u4f7f\u7528\u8005\u53ef\u63a7\u7684\u53d8\u91cf\uff0c\u800c\u4eceSource\u70b9\u6d41\u51fa\u7684\u6570\u636e\u6d41\u6211\u4eec\u79f0\u4f5c\u6c61\u70b9\u6d41\uff0c\u4e5f\u5c31\u662f\u7ed9\u8fd9\u4e9b\u53ef\u63a7\u6570\u636e\u6253\u4e0a\u6807\u7b7e\uff0c\u800cSink\u70b9\u5c31\u662f\u4e00\u4e9b\u5371\u9669\u51fd\u6570\uff0c\u6bd4\u5982\u5e38\u89c1\u7684\u4ec0\u4e48system\u3001eval\u4e4b\u7c7b\u7684\uff0c\u5982\u679c\u5b58\u5728\u4e00\u6761\u4eceSource\u70b9\u5230Sink\u70b9\u7684\u8def\u5f84\uff0c\u6211\u4eec\u5c31\u8ba4\u4e3a\u4eceSource\u70b9\u6d41\u51fa\u7684\u6570\u636e\u6d41\u53ef\u4ee5\u4f20\u64ad\u5230Sink\u70b9\uff0c\u4ee3\u7801\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002<\/p>\n\n\n\n<p>\u8bf4\u8d77\u6765\u5f88\u7b80\u5355\uff0c\u4e0d\u8fc7\u5b9e\u9645\u5f00\u53d1\u8d77\u6765\u53ef\u6ca1\u6709\u90a3\u4e48\u7b80\u5355\uff0c\u9996\u5148\u5c31\u662f\u6709\u8def\u5f84\u5176\u5b9e\u4e5f\u4e0d\u4e00\u5b9a\u53ef\u63a7\uff0c\u6bd4\u5982\u4e0b\u9762\u7684\u4ee3\u7801\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n$a = $_POST&#91;1];\nsystem($a);<\/code><\/pre>\n\n\n\n<p>\u8fd9\u81ea\u7136\u662f\u4e00\u4e2a\u5178\u4e2d\u5178\u7684\u5b58\u5728\u5b89\u5168\u95ee\u9898\u7684\u4ee3\u7801\uff0c\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c$_POST[1]\u53ef\u4ee5\u89c6\u4f5cSource\u70b9\uff0c\u53d8\u91cf$a\u53ef\u4ee5\u770b\u4f5c\u4eceSource\u70b9\u6d41\u51fa\u7684\u6c61\u70b9\u6570\u636e\uff0c\u800c\u6211\u4eec\u7684\u6c61\u70b9\u6570\u636e$a\u6d41\u5165\u4e86Sink\u70b9system\u4e2d\uff0c\u5b58\u5728\u5b89\u5168\u98ce\u9669\u3002\u4f46\u5982\u679c\u7a0d\u5fae\u4fee\u6539\u4e00\u4e0b\uff0c\u4e8b\u60c5\u5c31\u6709\u6240\u4e0d\u540c\u4e86\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n$a = $_POST&#91;1];\n$a = md5($a);\nsystem($a);<\/code><\/pre>\n\n\n\n<p>\u5f53\u6211\u4eec\u7684\u53d8\u91cf$a\u7ecf\u8fc7md5\u4e4b\u540e\uff0c\u4ed6\u8fd8\u662f\u4f7f\u7528\u8005\u53ef\u63a7\u7684\u53d8\u91cf\u5417\uff1f\u5f53\u7136\u4e0d\u662f\u4e86\uff0c\u56e0\u6b64\u8fd9\u65f6\u81ea\u7136\u4e0d\u80fd\u518d\u628a\u5b83\u89c6\u4f5c\u6c61\u70b9\uff0c\u5728\u6c61\u70b9\u5206\u6790\u4e4b\u4e2d\uff0c\u8fd9\u7c7b\u8fc7\u6ee4\u51fd\u6570\u7684\u5b66\u540d\u53eb\u505a<strong>Sanitizer<\/strong>\uff0c\u7ffb\u8bd1\u8fc7\u6765\u5927\u6982\u662f\u6d88\u6bd2\u5242\u7684\u610f\u601d\uff0c\u5c31\u662f\u4e00\u7c7b\u53ef\u4ee5\u8ba9\u6c61\u70b9\u6d41\u65e0\u6548\u5316\u7684\u51fd\u6570\u3002\u6211\u4eec\u518d\u6765\u770b\u4e0b\u4e00\u4e2a\u4f8b\u5b50\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n$a = $_POST&#91;1];\n$a = trim($a);\nsystem($a);<\/code><\/pre>\n\n\n\n<p>\u73b0\u5728\u6d41\u5230system\u7684$a\u8fd8\u662f\u6c61\u70b9\u6570\u636e\u5417\uff0c\u867d\u7136trim\u4e5f\u662f\u4e00\u4e2aPHP\u5185\u7f6e\u51fd\u6570\uff0c\u8d77\u5230\u4e86\u8fc7\u6ee4\u4f5c\u7528\uff0c\u4f46\u5b83\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u53ea\u4f1a\u5728\u4e24\u7aef\u5220\u9664\u7a7a\u767d\u5b57\u7b26\uff0c\u867d\u7136\u8fc7\u6ee4\u4e86\u4f46\u548c\u6ca1\u8fc7\u6ee4\u4e00\u6837\uff0c\u81ea\u7136\u4e5f\u5c5e\u4e8e\u53ef\u63a7\u6570\u636e\uff0c\u5728\u6c61\u70b9\u5206\u6790\u4e2d\u8fd9\u7c7b\u51fd\u6570\u53eb\u505a<strong>Transfer<\/strong>\uff0c\u5373\u53ef\u4ee5\u4f7f\u6c61\u70b9\u6d41\u7ee7\u7eed\u4f20\u64ad\u7684\u51fd\u6570\u3002<\/p>\n\n\n\n<p>\u9664\u4e86\u8fd9\u4e9b\u7b80\u5355\u7684\u4f20\u64ad\u4f8b\u5b50\uff0c\u5728\u771f\u5b9e\u4ee3\u7801\u4e2d\u8fd8\u6709\u4e00\u4e9b\u975e\u5e38\u590d\u6742\u7684\u60c5\u51b5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n$age = $_POST&#91;1];\nif ($age &lt; 18) {\n    system($age);\n} elseif ($age == 18) {\n    $age = 1;\n    echo $age;\n} elseif ($age == 19) {\n    eval($age);\n} else {\n    echo $age;\n}\n<\/code><\/pre>\n\n\n\n<p>\u6bd4\u5982\u5bf9\u4e8e\u8fd9\u7c7b\u5206\u652f\u8bed\u53e5\uff0c\u6bcf\u4e00\u4e2a\u5206\u652f\u5b9e\u9645\u4e0a\u90fd\u662f\u4e00\u6761\u548c\u5176\u4ed6\u5206\u652f\u9694\u79bb\u7684\u5355\u72ec\u7684\u4f20\u64ad\u6d41\uff0c\u5f7c\u6b64\u4e4b\u95f4\u76f8\u4e92\u72ec\u7acb\u4e0d\u53d7\u5f71\u54cd\uff0c\u6211\u4eec\u9700\u8981\u5bf9\u8fd9\u4e9b\u5206\u652f\u5355\u72ec\u505a\u4e00\u6b21\u4f20\u64ad\u3002\u5728\u5206\u652f\u8bed\u53e5\u4e2d\u6839\u636e\u662f\u5426\u5b58\u5728\u9ed8\u8ba4\u5206\u652f\uff0c\u8fd8\u5b58\u5728\u4e00\u79cd\u7279\u6b8a\u7684\u60c5\u51b5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n$age = $_POST&#91;1];\nif ($age &lt; 18) {\n    $age = $age . \"1\";\n} elseif ($age == 18) {\n    $age = 1;\n}\nsystem($age);\n<\/code><\/pre>\n\n\n\n<p>\u4e0a\u4e00\u4e2a\u5206\u652f\u8bed\u53e5\u4e2d\uff0c\u7531\u4e8e\u5b58\u5728\u9ed8\u8ba4\u5206\u652felse\uff0c\u65e0\u8bba\u5982\u4f55\u6570\u636e\u6d41\u5728\u4f20\u64ad\u7684\u8fc7\u7a0b\u4e2d\u4e5f\u9700\u8981\u7ecf\u8fc7if\u8bed\u53e5\uff0c\u533a\u522b\u503c\u5728\u4e8e\u7ecf\u8fc7\u54ea\u4e00\u4e2a\u5206\u652f\u8bed\u53e5\u3002\u800c\u5728\u8fd9\u7c7b\u6ca1\u6709\u9ed8\u8ba4\u5206\u652f\u7684\u60c5\u51b5\u4e0b\uff0c\u6570\u636e\u6d41\u4f20\u64ad\u65f6\u662f\u53ef\u4ee5\u4e0d\u7ecf\u8fc7\u6574\u4e2aif\u8bed\u53e5\u76f4\u63a5\u7559\u4e0b\u6765\u7684\uff0c\u56e0\u6b64\u4e0a\u9762\u6574\u4e2a\u4ee3\u7801\uff0c\u6709\u6548\u7684\u4f20\u64ad\u8def\u5f84\u6709\u4e24\u6761\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$age = $_POST&#91;1]; =&gt; $age = $age . \"1\"; =&gt;system($age);\n$age = $_POST&#91;1]; =&gt;system($age);<\/code><\/pre>\n\n\n\n<p>\u8fd9\u4e5f\u662f\u4e00\u4e2a\u5f88\u5bb9\u6613\u88ab\u5ffd\u7565\u7684\u60c5\u51b5\uff0c\u9700\u8981\u989d\u5916\u6ce8\u610f\u3002<\/p>\n\n\n\n<p>\u4e3a\u4e86\u5b9e\u73b0PHP\u4e2d\u7684\u6c61\u70b9\u5206\u6790\uff0c\u5728\u6700\u521d\u662f\u53c2\u8003\u4e86\u4e00\u70b9\u6885\u5b50\u9152\u5e08\u5085\u7684\u6bd5\u8bbe\uff1a<a href=\"https:\/\/meizjm3i.github.io\/2020\/10\/09\/%E8%81%8A%E8%81%8APHPVulFinder\/\">\u804a\u804aPHPVulFinder<\/a>\uff0c\u4e0d\u8fc7\u540e\u6765\u53d1\u73b0\u6885\u5b50\u9152\u5e08\u5085\u7684\u9879\u76ee\u5728\u5404\u65b9\u9762\u548c\u6211\u7684\u9884\u671f\u90fd\u6709\u5f88\u5927\u7684\u5dee\u8ddd\uff0c\u6240\u4ee5IR\u90a3\u91cc\u662f\u5b8c\u5168\u91cd\u6784\u4e86\u4e00\u904d\uff0c\u800c\u5230\u4e86\u540e\u9762\u57fa\u672c\u5757\u3001\u63a7\u5236\u6d41\u56fe\u548c\u6c61\u70b9\u5206\u6790\u90a3\u91cc\u5206\u6790\u601d\u8def\u7684\u5dee\u5f02\u5c31\u66f4\u52a0\u5927\u4e86\uff0c\u57fa\u672c\u4e0a\u6ca1\u6709\u5565\u5173\u7cfb\u4e86\u3002<\/p>\n\n\n\n<p>\u6574\u4f53\u601d\u8def\u5c31\u662f\u9996\u5148\u7528php_parser\u8f6c\u5316\u6210AST\uff0c\u7136\u540e\u5728AST\u7684\u57fa\u7840\u4e0a\u81ea\u5df1\u5b9e\u73b0\u4e00\u5957IR\uff0c\u5728\u6211\u8fd9\u91cc\u547d\u540d\u53eb\u505aQ_IR\uff0c\u5728Q_IR\u7684\u57fa\u7840\u4e0a\u5212\u5206\u57fa\u672c\u5757\uff0c\u5728\u57fa\u672c\u5757\u7684\u57fa\u7840\u4e0a\u6784\u9020CFG\uff0c\u5728CFG\u7684\u57fa\u7840\u4e0a\u505a\u6c61\u70b9\u4f20\u64ad\u3002<\/p>\n\n\n\n<p>\u5bf9\u4e8e\u6ca1\u6709\u5206\u652f\u8bed\u53e5\u7684\u6b63\u5e38\u4ee3\u7801\uff0c\u5f53\u7136\u662f\u4ece\u4e0a\u5230\u4e0b\u6309\u987a\u5e8f\u5206\u6790\uff0c\u751a\u81f3\u4e5f\u6ca1\u6709\u4ec0\u4e48\u5212\u5206\u57fa\u672c\u5757\u7684\u5fc5\u8981\uff0c\u800c\u5bf9\u4e8e\u5b58\u5728\u591a\u5206\u652f\u7684\u8bed\u53e5\uff0c\u6211\u7684\u5904\u7406\u662f\u628a\u6bcf\u4e2a\u5206\u652f\u8bed\u53e5\u89c6\u4f5c\u4e00\u4e2a\u5355\u72ec\u7684\u57fa\u672c\u5757\uff0c\u5bf9\u6574\u4e2aif\u8bed\u53e5\u505a\u4e24\u4e2a\u6807\u8bb0\uff0c\u5206\u522b\u4f5c\u4e3a\u5206\u652f\u8bed\u53e5\u7684\u5f00\u59cb\u6807\u8bb0\u548c\u7ed3\u675f\u6807\u8bb0\uff0c\u5f00\u59cb\u6807\u8bb0\u7684\u51fa\u8fb9\u6307\u5411\u6bcf\u4e2a\u5206\u652f\u8bed\u53e5\u5bf9\u5e94\u7684\u57fa\u672c\u5757\uff0c\u800c\u6bcf\u4e2a\u57fa\u672c\u5757\u7684\u51fa\u8fb9\u53c8\u6307\u5411\u7ed3\u675f\u6807\u8bb0\uff0c\u8fd9\u6837\u5c31\u5b9e\u73b0\u4e86\u6d41\u5206\u652f\u7684\u5212\u5206\uff0c\u7136\u540e\u63d0\u53d6\u6bcf\u4e00\u6761\u8fd9\u7c7b\u6d41\u5206\u652f\uff0c\u4f5c\u4e3a\u5355\u72ec\u7684\u63a7\u5236\u6d41\uff0c\u5728\u6bcf\u4e2a\u5355\u72ec\u7684\u63a7\u5236\u6d41\u4e0a\u505a\u6c61\u70b9\u7684\u4f20\u64ad\uff0c\u540e\u9762\u4f1a\u8be6\u7ec6\u8bb2\u8bb2\u8fd9\u4e00\u5757\uff0c\u4f46\u7f3a\u70b9\u5c31\u662f\u9047\u5230\u5927\u578b\u9879\u76ee\u7684\u65f6\u5019\u5f88\u5bb9\u6613\u51fa\u73b0\u5206\u652f\u7206\u70b8\u7684\u60c5\u51b5\uff0c\u4e0d\u77e5\u9053\u662f\u6211\u601d\u8def\u7684\u95ee\u9898\u8fd8\u662f\u6c61\u70b9\u4f20\u64ad\u5c31\u8fd9\u6837\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">IR<\/h2>\n\n\n\n<p>IR\u5b66\u540d\u53eb\u505a\u4e2d\u95f4\u8868\u793a\uff08Intermediate Representation, IR\uff09\uff0c\u662f\u4e00\u7c7b\u6bd4AST\u5c42\u6b21\u66f4\u4f4e\u7684\u62bd\u8c61\u8868\u793a\uff0c\u4e00\u4e2a\u771f\u5b9e\u7684PHP\u4ee3\u7801\u76f4\u63a5\u5206\u6790\u662f\u975e\u5e38\u96be\u5206\u6790\u7684\uff0c\u6211\u4eec\u90fd\u662f\u5c06\u5176\u8f6c\u5316\u6210\u4e86\u66f4\u4f4e\u5c42\u6b21\u7684\u62bd\u8c61\u8868\u793a\uff0c\u5728\u8fd9\u4e2a\u62bd\u8c61\u8868\u793a\u7684\u57fa\u7840\u4e0a\u518d\u8fdb\u884c\u9759\u6001\u5206\u6790\u3002<\/p>\n\n\n\n<p>php-parser \u662f\u4e00\u4e2a PHP \u4ee3\u7801\u89e3\u6790\u5668\uff0c\u53ef\u4ee5\u5c06 PHP \u6e90\u4ee3\u7801\u8f6c\u6362\u4e3a&nbsp;AST \u3002\u5b83\u7531 Nikic \u5f00\u53d1\uff0c\u4f5c\u4e3a PHP \u4ee3\u7801\u9759\u6001\u5206\u6790\u7684\u6838\u5fc3\u5de5\u5177\u4e4b\u4e00\u3002\u4f7f\u7528 php-parser\uff0c\u53ef\u4ee5\u5bf9 PHP \u4ee3\u7801\u8fdb\u884c\u7ed3\u6784\u5316\u89e3\u6790\uff0c\u63d0\u53d6\u53d8\u91cf\u3001\u51fd\u6570\u8c03\u7528\u3001\u63a7\u5236\u6d41\u7ed3\u6784\u7b49\u4fe1\u606f\uff0c\u4fbf\u4e8e\u540e\u7eed\u5206\u6790\uff0c\u5982\u4ee3\u7801\u4f18\u5316\u3001\u6f0f\u6d1e\u68c0\u6d4b\u3001\u81ea\u52a8\u5316\u91cd\u6784\u7b49\u3002\u6211\u770b\u5230\u817e\u8baf\u7684\u6c61\u70b9\u5206\u6790\u5de5\u5177Xcheck\u66fe\u63d0\u5230\u5728\u90e8\u5206\u8bed\u8a00\u4e2d\uff0c\u4ed6\u4eec\u8fdeAST\u90fd\u662f\u81ea\u5df1\u5b9e\u73b0\u7684\uff0c\u56e0\u6b64\u7b97\u662f\u5b8c\u5168\u81ea\u7814\uff0c\u8fd9\u4e48\u770b\u6765\u817e\u8baf\u90a3\u8fb9\u7684\u601d\u8def\u4e5f\u662f\u5148\u5c06\u4ee3\u7801\u8f6c\u5316\u6210AST\uff0c\u7136\u540e\u518d\u7528AST\u751f\u6210IR\uff0c\u4e0d\u8fc7\u6211\u611f\u89c9\u4ed6\u4eec\u81ea\u7814\u7684\u8bdd\u751f\u6210PHP AST\u7684\u6548\u679c\u80af\u5b9a\u6ca1php-parser\u597d\uff0c\u4f30\u8ba1\u4e5f\u662f\u5728php-parser\u751f\u6210\u7684AST\u7684\u57fa\u7840\u4e0a\u505a\u6c61\u70b9\u5206\u6790\u7684\u3002<\/p>\n\n\n\n<p>\u6bd4\u5982\u4e0b\u9762\u7684\u4ee3\u7801\uff0c\u751f\u6210\u7684AST\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\necho \"fushuling\";<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>array(1) {\n  &#91;0]=&gt;\n  object(PhpParser\\Node\\Stmt\\Echo_)#629 (2) {\n    &#91;\"exprs\"]=&gt;\n    array(1) {\n      &#91;0]=&gt;\n      object(PhpParser\\Node\\Scalar\\String_)#628 (2) {\n        &#91;\"value\"]=&gt;\n        string(9) \"fushuling\"\n        &#91;\"attributes\":protected]=&gt;\n        array(4) {\n          &#91;\"startLine\"]=&gt;\n          int(2)\n          &#91;\"endLine\"]=&gt;\n          int(2)\n          &#91;\"kind\"]=&gt;\n          int(2)\n          &#91;\"rawValue\"]=&gt;\n          string(11) \"\"fushuling\"\"\n        }\n      }\n    }\n    &#91;\"attributes\":protected]=&gt;\n    array(2) {\n      &#91;\"startLine\"]=&gt;\n      int(2)\n      &#91;\"endLine\"]=&gt;\n      int(2)\n    }\n  }\n}<\/code><\/pre>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\u5bf9\u4e8ephp-parser\u89e3\u6790\u751f\u6210\u7684AST\u4e2d\u4fdd\u5b58\u4e86\u5f88\u591a\u539f\u6709\u4ee3\u7801\u7684\u4fe1\u606f\uff0c\u6bd4\u5982\u6211\u4eec\u77e5\u9053\u8fd9\u4e2a\u8282\u70b9\u662f<code>PhpParser\\Node\\Stmt\\Echo_<\/code>\u7c7b\u578b\uff0c\u770b\u6837\u5b50\u4e5f\u77e5\u9053\u80af\u5b9a\u4ee3\u8868echo\uff0c\u7136\u540e\u4fdd\u5b58\u4e86\u5f88\u591a\u8c03\u7528\u7684\u4fe1\u606f\uff0c\u6bd4\u5982echo\u8f93\u51fa\u7684\u8fd9\u4e2aexprs (expression \u8868\u8fbe\u5f0f)\u662f\u4e00\u4e2a<code>PhpParser\\Node\\Scalar\\String_<\/code>\uff0c\u662f\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u7136\u540e\u5b83\u7684Value\u662f&#8221;fushuling&#8221;\uff0c\u5c31\u7b97\u6211\u4eec\u53ea\u770bAST\u4e5f\u80fd\u628a\u539f\u6709\u4ee3\u7801\u5206\u6790\u4e2a\u5927\u5dee\u4e0d\u5dee\u7684\uff0c\u8fd9\u5c31\u662f\u5c06\u539f\u6709\u4ee3\u7801\u8fdb\u884c\u62bd\u8c61\u5316\u7684\u597d\u5904\u3002<\/p>\n\n\n\n<p>php-parse\u751f\u6210\u7684AST\u4e2d\uff0c\u6bcf\u79cd\u4e0d\u540c\u7684\u4ee3\u7801\u5bf9\u5e94\u751f\u6210\u4e0d\u540c\u7684\u8282\u70b9\uff0c\u5e38\u89c1\u7684\u8282\u70b9\u79cd\u7c7b\u6709\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>PhpParser\\Node\\Stmt<\/code>\uff08\u8bed\u53e5\u8282\u70b9\uff09\u662f\u8868\u793a\u8bed\u53e5\uff08Statement\uff09\u7684\u8282\u70b9\uff0c\u5373\u4e0d\u8fd4\u56de\u503c\u4e14\u4e0d\u80fd\u51fa\u73b0\u5728\u8868\u8fbe\u5f0f\u4e2d\u7684\u8bed\u8a00\u7ed3\u6784\u3002\u4f8b\u5982\u7c7b\u5b9a\u4e49\uff08class definition\uff09\u5c31\u662f\u4e00\u4e2a\u8bed\u53e5\uff0c\u5b83\u4e0d\u4f1a\u8fd4\u56de\u503c\uff0c\u56e0\u6b64\u4e0d\u80fd\u5199\u6210 func(class A {}); \u8fd9\u6837\u7684\u5f62\u5f0f<\/li>\n\n\n\n<li><code>PhpParser\\Node\\Expr<\/code>\uff08\u8868\u8fbe\u5f0f\u8282\u70b9\uff09\u662f\u8868\u793a\u8868\u8fbe\u5f0f\uff08Expression\uff09\u7684\u8282\u70b9\uff0c\u5373\u8fd4\u56de\u503c\u4e14\u53ef\u4ee5\u51fa\u73b0\u5728\u5176\u4ed6\u8868\u8fbe\u5f0f\u4e2d\u7684\u8bed\u8a00\u7ed3\u6784\u3002\u4f8b\u5982\u53d8\u91cf$var\u548c\u51fd\u6570\u8c03\u7528func()\u90fd\u662f\u8868\u8fbe\u5f0f<\/li>\n\n\n\n<li><code>PhpParser\\Node\\Scalar<\/code>\uff08\u6807\u91cf\u8282\u70b9\uff09\u8868\u793a\u6807\u91cf\u503c\uff0c\u5982\u5b57\u7b26\u4e32&#8217;string&#8217;\uff08PhpParser\\Node\\Scalar\\String_\uff09\uff0c\u6574\u6570 0\uff08PhpParser\\Node\\Scalar\\LNumber\uff09\uff0c\u4ee5\u53ca\u9b54\u672f\u5e38\u91cf __FILE__\uff08PhpParser\\Node\\Scalar\\MagicConst\\File\uff09\u3002\u6240\u6709 PhpParser\\Node\\Scalar\u8282\u70b9\u90fd\u7ee7\u627f\u81ea PhpParser\\Node\\Expr\uff0c\u56e0\u4e3a\u6807\u91cf\u672c\u8d28\u4e0a\u4e5f\u662f\u4e00\u79cd\u8868\u8fbe\u5f0f<\/li>\n<\/ul>\n\n\n\n<p>\u4e0d\u8fc7\u8fd9\u4e9b\u4e1c\u897f\u4e86\u89e3\u4e2a\u5927\u6982\u4e5f\u5c31\u884c\u4e86\uff0c\u6bd5\u7adfAST\u53ea\u662f\u4e07\u91cc\u957f\u5f81\u7684\u7b2c\u4e00\u6b65\uff0c\u53ea\u662f\u6211\u4eec\u7684\u4e00\u4e2a\u8fc7\u6e21\u5de5\u5177\u7f62\u4e86\uff0c\u5728\u5b9e\u9645\u5f00\u53d1\u7684\u65f6\u5019\u5176\u5b9e\u6211\u4e5f\u4e0d\u5927\u77e5\u9053\u5b83\u89e3\u6790\u51fa\u6765\u7684AST\u91cc\u5404\u8282\u70b9\u6709\u5565\u7528\uff0c\u90fd\u662f\u7528\u7684\u65f6\u5019\u518d\u53bb\u67e5\uff0c\u60f3\u8981\u628a\u67d0\u4ee3\u7801\u89e3\u6790\u6210IR\u5c31\u7528php_parser\u628a\u4ee3\u7801\u751f\u6210AST\u7136\u540e\u770b\u5c31\u884c\u4e86\u3002<\/p>\n\n\n\n<p>\u6709\u4e86php-parser\u505a\u5de5\u5177\uff0c\u81ea\u5df1\u5b9e\u73b0\u4e00\u5957IR\u5176\u5b9e\u4e0d\u662f\u4e00\u4ef6\u96be\u4e8b\uff0c\u4f60\u53ea\u9700\u8981\u6309\u7167\u81ea\u5df1\u7684\u60f3\u6cd5\uff0c\u540e\u9762\u53ef\u80fd\u9700\u8981\u7528\u5230\u54ea\u4e9b\u5c5e\u6027\uff0c\u5c31\u628a\u4ed6\u4fdd\u5b58\u5230IR\u91cc\u5c31\u884c\u4e86\uff0c\u5728\u6211\u8fd9\u4e2a\u9879\u76ee\uff0c\u6211\u628a\u6211\u7684IR\u547d\u540d\u4e3aQ_IR\uff0c\u5177\u4f53\u5b9e\u73b0\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>class Q_IR\n{\n    public $id;        \/\/ \u6307\u4ee4\u7f16\u53f7\uff08\u552f\u4e00\u6807\u8bc6\u4e00\u4e2a\u56db\u5143\u7ec4\uff09\n    public $opcode;    \/\/ \u64cd\u4f5c\u7b26\uff0c\u4f8b\u5982\u8d4b\u503c\u3001\u52a0\u6cd5\u3001\u51fd\u6570\u8c03\u7528\u7b49\n    public $operand1;  \/\/ \u7b2c\u4e00\u4e2a\u64cd\u4f5c\u6570\n    public $operand2;  \/\/ \u7b2c\u4e8c\u4e2a\u64cd\u4f5c\u6570\uff08\u5982\u679c\u9002\u7528\uff09\n    public $dest;      \/\/ \u76ee\u6807\uff08\u5b58\u50a8\u8ba1\u7b97\u7ed3\u679c\uff09\n\n    \/\/\u521d\u59cb\u5316\u56db\u5143\u5f0f\u7684\u5404\u4e2a\u5c5e\u6027\n    public function __construct($id, $opcode = null, $operand1 = null, $operand2 = null, $dest = null)\n    {\n        $this-&gt;id = $id;\n        $this-&gt;opcode = $opcode;\n        $this-&gt;operand1 = $operand1;\n        $this-&gt;operand2 = $operand2;\n        $this-&gt;dest = $dest;\n    }\n}<\/code><\/pre>\n\n\n\n<p>Q\u662fquad\u7684\u610f\u601d\uff0c\u4e5f\u5c31\u662f\u56db\u5143\u7ec4\u3002\u4e00\u4e2aQ_IR\u4e2d\u9664\u4e86id\u6765\u6807\u8bc6\u81ea\u5df1\uff0c\u771f\u5b9e\u7528\u4e8e\u89e3\u6790\u7684\u5176\u5b9e\u662fopcode\u3001\u4e24\u4e2aoperand\u548cdest\uff0c\u5149\u770b\u540d\u5b57\u5176\u5b9e\u6ca1\u4ec0\u4e48\u7528\uff0c\u9664\u4e86opcode\u662f\u771f\u771f\u5b9e\u5b9e\u7684\u6765\u6807\u8bb0\u8fd9\u4e2aQ_IR\u662f\u5e72\u5565\u7684\u4ee5\u5916\uff0coperand1\u3001operand2\u548cdest\u6839\u636e\u89e3\u6790\u7684\u4ee3\u7801\u4e0d\u540c\u4fdd\u5b58\u7684\u4e1c\u897f\u5176\u5b9e\u4e5f\u4e0d\u540c\uff0c\u6bd4\u5982\u5bf9\u4e8e$a = $b\uff0c\u8fd9\u4e2adest\u53ef\u80fd\u662f\u6807\u8bb0\u7684\u8fd9\u4e2a\u88ab\u8d4b\u503c\u7684$a\uff0c\u800c\u5728\u8df3\u8f6c\u8bed\u53e5\u4e2d\u4ed6\u53ef\u80fd\u4ee3\u8868\u7684\u662f\u8df3\u8f6c\u76ee\u7684\u5730\u7b49\u7b49\uff0c\u90fd\u662f\u6839\u636e\u8bed\u53e5\u7684\u4e0d\u540c\u5b9e\u65f6\u89e3\u6790\u7684\u3002<\/p>\n\n\n\n<p>\u4ee5echo\u8bed\u53e5\u4e3a\u4f8b\uff0c\u6211\u4eec\u751f\u6210\u7684Q_IR\u683c\u5f0f\u4e3a{\u8bed\u53e5\u7c7b\u578b\uff0cnull\uff0c\u8c03\u7528\u53c2\u6570\uff0cnull}\uff0c\u5bf9\u4e8e\u4e0b\u9762\u7684\u4ee3\u7801\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n$a = \"test\";\necho $a;<\/code><\/pre>\n\n\n\n<p>\u5bf9\u5e94\u7684Q_IR\u5c31\u662f<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F1.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F1.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:462px;height:auto\"\/><\/div><\/figure>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\uff0c\u5bf9\u4e8eecho\uff0c\u6211\u5728opcode\u8fd9\u91cc\u4fdd\u5b58\u4e86\u5b83\u7684\u7c7b\u578bStmt_Echo\uff0c\u7136\u540eoperand1\u548cdest\u4e3a\u7a7a\uff0c\u53ea\u5728operand2\u8fd9\u91cc\u4fdd\u5b58\u4e86echo\u8f93\u51fa\u7684\u53d8\u91cf$a\u76f8\u5173\u7684\u4fe1\u606f\u3002<\/p>\n\n\n\n<p>\u9664\u4e86\u8fd9\u7c7b\u666e\u901a\u8bed\u53e5\uff0c\u6211\u4eec\u7740\u91cd\u8bb2\u8bb2\u89e3\u6790\u5206\u652f\u8bed\u53e5\u7684Q_IR\uff0c\u7b80\u5355\u6765\u8bf4\uff0c\u9762\u5bf9\u4e00\u4e2a\u5206\u652f\u8bed\u53e5\uff0c\u6211\u4eec\u751f\u6210\u5f00\u59cb\u6807\u8bb0\u548c\u7ed3\u675f\u6807\u8bb0\uff0c\u5f00\u59cb\u6807\u8bb0\u5bf9\u5e94Q_IR\u683c\u5f0f\u4e3a{&#8220;Whole_Branch_Start&#8221;, null, null,null}\uff0c\u7ed3\u675f\u6807\u8bb0\u5bf9\u5e94{&#8220;Whole_Branch_Finish&#8221;, null, null,null}\uff0c\u7136\u540e\u5bf9\u4e8e\u6bcf\u4e00\u6761\u5206\u652f\uff0c\u6211\u4eec\u4e5f\u7528\u7c7b\u4f3c\u7684\u65b9\u5f0f\u5212\u5206\u4ed6\u4eec\u7684\u4f5c\u7528\u57df\uff0c\u5728\u6bcf\u6761\u5206\u652f\u7684\u5f00\u59cb\u5bf9\u5e94{&#8220;Stmt_Branch_Start&#8221;, null, \u6574\u4e2a\u5206\u652f\u8bed\u53e5\u7684\u5f00\u59cbid, \u6574\u4e2a\u5206\u652f\u8bed\u53e5\u7684\u7ed3\u675fid}\uff0c\u5728\u7ed3\u675f\u5bf9\u5e94{&#8220;Stmt_Branch_Finish&#8221;, $start_id, $end_id, null}(start-&gt;end \u5c0f\u5206\u652f\u7684\u4f5c\u7528\u57df)\uff0c\u4e24\u4e2a\u6807\u8bb0\u4e4b\u95f4\u5c31\u662f\u8fd9\u6761\u5206\u652f\u771f\u6b63\u7684\u5185\u5bb9\u4e86\uff0c\u5229\u7528Stmt_Branch_Start\u5bf9\u5e94\u7684Q_IR\u6765\u4e0e\u6574\u4e2a\u5206\u652f\u8bed\u53e5\u7684\u5f00\u59cb\u548c\u7ed3\u675f\u76f8\u8fde\uff0c\u770b\u8d77\u6765\u5c31\u662f\u4e0b\u9762\u7684\u6837\u5b50\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F2.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F2.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p>\u7528\u6807\u8bb0\u5212\u5206\u4f5c\u7528\u57df\u8fd9\u4e2a\u65b9\u6cd5\u5728\u9879\u76ee\u91cc\u51fa\u73b0\u4e86\u5f88\u591a\u6b21\uff0c\u5f88\u597d\u7528\uff0c\u6bd4\u5982\u5728\u89e3\u6790\u51fd\u6570\u7684\u65f6\u5019\u4e5f\u662f\u7528\u4e86\u76f8\u4f3c\u7684\u65b9\u6cd5\uff0c\u5728\u771f\u5b9e\u7684PHP\u4ee3\u7801\u4e2d\u5927\u6982\u6709\u4e24\u7c7b\u51fd\u6570\uff0c\u7b2c\u4e00\u7c7b\u662f\u7528\u6237\u51fd\u6570\uff0c\u53e6\u4e00\u7c7b\u662f\u5185\u7f6e\u51fd\u6570\uff0c\u8fd9\u4e24\u7c7b\u51fd\u6570\u5176\u5b9e\u90fd\u4f7f\u7528\u4e86\u76f8\u4f3c\u7684\u65b9\u6cd5\u8fdb\u884c\u8bc6\u522b\uff0c\u6bd4\u5982\u5bf9\u4e8e\u5411\u51fd\u6570\u4e2d\u4f20\u5165\u7684\u53c2\u6570\uff0c\u6211\u4eec\u89e3\u6790\u6210{&#8220;Internal_Call_Param&#8221;, null, null,\u53c2\u6570}\uff0c\u63a5\u7740\u4fdd\u5b58\u8fd9\u6b21\u8c03\u7528{&#8220;Expr_FuncCall_Internal&#8221;\uff0c\u51fd\u6570\u540d\uff0cnull\uff0c\u8c03\u7528\u7ed3\u675f\u7684id}\uff0c\u6700\u540e\u518d\u6765\u4e00\u4e2a\u8868\u793a\u8c03\u7528\u7ed3\u675f\u7684Q_IR\uff0c\u683c\u5f0f\u4e3a{&#8220;Expr_FuncCall_Internal_Finish&#8221;\uff0c\u8c03\u7528\u5f00\u59cb\u7684id\uff0c\u8c03\u7528\u7ed3\u675f\u7684id\uff0cnull}\uff0c\u6bd4\u5982system($a)\u7684\u89e3\u6790\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F3.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F3.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:317px;height:auto\"\/><\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u57fa\u672c\u5757<\/h2>\n\n\n\n<p>\u6309\u7167\u4e13\u4e1a\u7684\u8bf4\u6cd5\uff0c\u5212\u5206\u57fa\u672c\u5757\u7684\u5173\u952e\u4fbf\u662f\u627eleader\uff0c\u5373\u6bcf\u4e2a\u57fa\u672c\u5757\u7684\u5165\u53e3\u70b9\uff0c\u5e38\u89c1\u7684\u5165\u53e3\u70b9\u6709\u4e09\u79cd\uff0c\u5373\u4ee3\u7801\u7684\u7b2c\u4e00\u6761\u8bed\u53e5\uff0cgoto\u8bed\u53e5\u7684\u76ee\u7684\u5730\uff0cgoto\u8bed\u53e5\u7684\u4e0b\u4e00\u6761\u8bed\u53e5\u3002\u4e0d\u8fc7\u5728\u771f\u5b9e\u7684PHP\u9879\u76ee\u4e2d\u5e94\u8be5\u5f88\u5c11\u76f4\u63a5\u51fa\u73b0\u7c7b\u4f3c\u4e8eC\u8bed\u8a00\u4e2dgoto\u7684\u7528\u6cd5\uff0c\u6240\u4ee5\u6211\u4e3b\u8981\u53ea\u5bf9\u5206\u652f\u8bed\u53e5\u8fdb\u884c\u5212\u5206\uff0c\u628a\u6bcf\u4e2a\u5206\u652f\u89c6\u4f5c\u72ec\u7acb\u7684\u57fa\u672c\u5757\uff0c\u5176\u4ed6\u987a\u5e8f\u6267\u884c\u7684\u4ee3\u7801\u4e8b\u5b9e\u4e0a\u4e5f\u6ca1\u5565\u5212\u5206\u7684\u5fc5\u8981\u4e86\u3002<\/p>\n\n\n\n<p>\u5728\u6211\u7684\u9879\u76ee\u91cc\u57fa\u672c\u5757\u662f\u8fd9\u4e48\u5b9a\u4e49\u7684\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>class BasicBlock\n{\n    \/\/\u51fa\u8fb9\u4e0e\u5165\u8fb9\n    public $id;\n    public $InEdge;\n    public $Content = &#91;]; \/\/\u57fa\u672c\u5757\u7684\u5185\u5bb9  \u6784\u5efaCFG\u7684\u65f6\u5019\u53bb\u4e00\u4e0b\u91cd\n    public $OutEdge;\n}<\/code><\/pre>\n\n\n\n<p>id\u6807\u8bc6\u57fa\u672c\u5757\u7684\u4f4d\u7f6e\uff0cInEdge\u4ee3\u8868\u5165\u8fb9\uff0c$OutEdge\u4ee3\u8868\u51fa\u8fb9\uff0c$Content\u662f\u6bcf\u4e2a\u57fa\u672c\u5757\u7684\u5185\u5bb9\u3002<\/p>\n\n\n\n<p>\u5728\u51fa\u73b0\u5206\u652f\u8bed\u53e5\u65f6\uff0c\u6211\u4eec\u4f1a\u76f4\u63a5\u751f\u6210\u4e00\u4e2a\u57fa\u672c\u5757\uff0c\u5e76\u7ec8\u6b62\u5f53\u524d\u57fa\u672c\u5757\uff0c\u6bd4\u5982\u5728\u6b63\u5e38\u7684\u4f20\u64ad\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u626b\u63cf\u5230\u67d0\u4e2aQ_IR\u7684opcode\u4e3aWhole_Branch_Start\uff0c\u8fd9\u65f6\u6211\u4eec\u4f1a\u8ba9\u5f53\u524d\u57fa\u672c\u5757\u7684\u51fa\u8fb9\u8d4b\u503c\u4e3a\u8fd9\u6761Q_IR\uff0c\u7136\u540e\u7ee7\u7eed\u5411\u4e0b\u4f20\u64ad\uff0c\u800c\u5f53\u6211\u4eec\u626b\u63cf\u5230\u67d0\u4e2aQ_IR\u7684opcode\u4e3aStmt_Branch_Start\u65f6\uff0c\u8fd9\u4ee3\u8868\u6211\u4eec\u73b0\u5728\u5339\u914d\u5230\u4e86\u5206\u652f\u8bed\u53e5\u7684\u67d0\u4e00\u4e2a\u5206\u652f\u7684\u5f00\u59cb\uff0c\u6b64\u65f6\u6211\u4eec\u4f1a\u65b0\u751f\u6210\u4e00\u4e2a\u57fa\u672c\u5757\uff0c\u5e76\u8ba9\u8be5\u57fa\u672c\u5757\u7684\u5165\u8fb9\u6307\u5411\u6574\u4e2a\u5206\u652f\u8bed\u53e5\u7684\u5f00\u59cb\uff0c\u5373Whole_Branch_Start\u5bf9\u5e94\u7684Q_IR\uff0c\u51fa\u8fb9\u6307\u5411\u6574\u4e2a\u5206\u652f\u8bed\u53e5\u7684\u7ed3\u675f\uff0c\u5373Whole_Branch_Finish\u5bf9\u5e94\u7684Q_IR\uff0c\u7136\u540e\u4e0d\u65ad\u5411BasicBlock\u7684content\u8bfb\u5165\u5185\u5bb9\uff0c\u76f4\u5230\u9047\u5230opcode\u4e3aStmt_Branch_Finish\u7684Q_IR\u65f6\uff0c\u6211\u4eec\u4f1a\u5c06\u5176\u8bfb\u5165$content\uff0c\u6574\u6761\u5206\u652f\u7ed3\u675f\u3002\u800c\u7ee7\u7eed\u904d\u5386\u5230\u4e0b\u4e00\u6761\u5206\u652f\u7684\u5f00\u59cb\uff0c\u5373opcode\u4e3aStmt_Branch_Start\u7684Q_IR\uff0c\u53c8\u6309\u7167\u76f8\u4f3c\u8fc7\u7a0b\u5904\u7406\uff0c\u5177\u4f53\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F4.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F4.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\u6211\u5e76\u6ca1\u6709\u5355\u72ec\u5b9e\u73b0\u4e00\u4e2a\u8fb9\u7684\u7ed3\u6784\uff0c\u57fa\u672c\u5757\u7684\u76f8\u8fde\u5c31\u662f\u9760\u51fa\u8fb9\u548c\u5165\u8fb9\u5bf9\u5e94\u7684Q_IR\uff0c\u5982\u679c\u5757A\u548c\u5757B\u524d\u540e\u76f8\u8fde\uff0c\u90a3\u4e48\u5757A\u7684\u51fa\u8fb9\u548c\u5757B\u7684\u5165\u8fb9\u5c31\u662f\u540c\u4e00\u6761Q_IR\u3002\u5728\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u4f1a\u4e00\u76f4\u9ed8\u8ba4\u5f53\u524d\u57fa\u672c\u5757\u7684\u5165\u8fb9\u662f\u4e0a\u4e00\u4e2a\u57fa\u672c\u5757\u7684\u51fa\u8fb9\uff0c\u7136\u540e\u5f53\u524d\u57fa\u672c\u5757\u7684\u51fa\u8fb9\u662f\u672c\u6761Q_IR\u5e76\u52a0\u5165content\uff0c\u76f4\u5230\u5339\u914d\u5230\u6700\u540e\u4e00\u6761Q_IR\uff0c\u6b64\u65f6\u4f1a\u7ec8\u6b62\u904d\u5386\uff0c\u5e76\u5c06\u8fd9\u6761Q_IR\u4f5c\u4e3a\u5f53\u524d\u57fa\u672c\u5757\u7684\u51fa\u8fb9\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">CFG<\/h2>\n\n\n\n<p>\u8bf4\u662fCFG\uff0c\u4e0d\u8fc7\u6211\u611f\u89c9\u6211\u7684CFG\u548c\u6b63\u5e38\u7684CFG\u8fd8\u662f\u6709\u6240\u4e0d\u540c\uff0c\u6211\u8fd9\u91cc\u5b9a\u4e49\u4e86\u4e24\u4e2a\u7ed3\u6784\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>class Graph\n{\n    public $BasicBlock_Set = &#91;];\n    public $Q_IR_Set = &#91;];\n}\n\nclass CFG\n{\n    public $Graph_Set = &#91;]; \/\/ \u6240\u6709\u7684\u63a7\u5236\u6d41\u7684\u96c6\u5408\uff0c\u4fdd\u5b58\u4e86\u4e00\u4e2a\u56fe\u7684\u63a7\u5236\u6d41\n}<\/code><\/pre>\n\n\n\n<p>Graph\u5c31\u662f\u4e00\u6761\u5355\u72ec\u7684\u3001\u6ca1\u6709\u5206\u53c9\u7684\u63a7\u5236\u6d41\uff0c\u91cc\u9762\u6709\u57fa\u672c\u5757\u96c6\u5408\u548cQ_IR\u96c6\u5408\uff0c\u6211\u4eec\u4f1a\u628a\u5212\u5206\u597d\u57fa\u672c\u5757\u96c6\u5408\u91cd\u65b0\u8f6c\u5316\u6210Q_IR\u96c6\u5408\uff0c\u8fd9\u65f6\u7684Q_IR\u5c31\u662f\u987a\u5e8f\u6267\u884c\u7684\u4e86\uff0c\u540e\u9762\u5206\u6790\u7684\u65f6\u5019\u6211\u4eec\u53ea\u9700\u8981\u6309\u987a\u5e8f\u904d\u5386\u5c31\u884c\u4e86\uff0c\u800cCFG\u5728\u6211\u8fd9\u91cc\u5176\u5b9e\u662f\u63a7\u5236\u6d41\u7684\u96c6\u5408\uff0c\u4fdd\u5b58\u4e86\u56fe\u91cc\u7684\u6240\u6709\u63a7\u5236\u6d41\u3002<\/p>\n\n\n\n<p>\u5728\u57fa\u672c\u5757\u90a3\u91cc\u6211\u4eec\u5206\u6790\u4e86\u5982\u4f55\u5c06\u89e3\u6790\u800c\u6765\u7684Q_IR\u8f6c\u5316\u6210\u57fa\u672c\u5757\uff0c\u5728\u8fd9\u91cc\u6211\u4eec\u9700\u8981\u5c06\u57fa\u672c\u5757\u8f6c\u5316\u6210Graph\u3002\u7531\u4e8e\u6bcf\u4e2a\u57fa\u672c\u5757\u90fd\u7531\u51fa\u8fb9\u3001\u5165\u8fb9\u548c\u5185\u5bb9\u7ec4\u6210\uff0c\u82e5\u57fa\u672c\u57571\u548c\u57fa\u672c\u57572\u5f7c\u6b64\u76f8\u8fde\uff0c\u5219\u57fa\u672c\u57571\u7684\u51fa\u8fb9\u548c\u57fa\u672c\u57572\u7684\u5165\u8fb9\u662f\u540c\u4e00\u4e2aQ_IR\uff0c\u56e0\u6b64\u5728\u5bf9\u6784\u5efaGraph\u7684\u8fc7\u7a0b\u4e2d\uff0c\u4f7f\u7528\u7684\u6838\u5fc3\u7b97\u6cd5\u662f\u6df1\u5ea6\u4f18\u5148\u641c\u7d22\u7b97\u6cd5(DFS)\uff0c\u4e5f\u5c31\u662f\u4e0d\u65ad\u7528\u5f53\u524d\u57fa\u672c\u5757\u7684\u51fa\u8fb9\u4e0e\u4e0b\u4e00\u4e2a\u57fa\u672c\u5757\u7684\u5165\u8fb9\u8fdb\u884c\u5339\u914d\uff0c\u82e5\u4e8c\u8005\u662f\u540c\u4e00\u4e2aQ_IR\uff0c\u5219\u4ee3\u8868\u4e24\u4e2a\u57fa\u672c\u5757\u524d\u540e\u76f8\u8fde\uff0c\u6211\u4eec\u4fbf\u5c06\u5176\u52a0\u5165\u6bcf\u4e2a\u63a7\u5236\u6d41Graph\u7684BasicBlock_Set\u5c5e\u6027\u4e2d\u3002<\/p>\n\n\n\n<p>\u6709\u4e2a\u5f88\u503c\u5f97\u6ce8\u610f\u7684\u5730\u65b9\uff0c\u5c31\u662f\u5728\u8fdb\u884cDFS\u7684\u8fc7\u7a0b\u4e2d\uff0c\u7531\u4e8e\u6d41\u7684\u5206\u53c9\uff0c\u5f88\u53ef\u80fd\u4f1a\u51fa\u73b0\u4e00\u4e2a\u51fa\u8fb9\u5bf9\u5e94\u591a\u4e2a\u5165\u8fb9\u7684\u60c5\u51b5\uff0c\u6211\u4eec\u9700\u8981\u5728\u8fd9\u65f6\u68c0\u6d4b\u51fa\u8fd9\u79cd\u60c5\u51b5\uff0c\u5e76\u521b\u5efa\u65b0\u7684Graph\u7684\u7ed3\u6784\uff0c\u56e0\u4e3a\u51fa\u73b0\u4e00\u5bf9\u591a\u5219\u8bf4\u660e\u51fa\u73b0\u4e86\u65b0\u7684\u63a7\u5236\u6d41\uff0c\u9700\u8981\u7279\u6b8a\u5904\u7406\uff0c\u793a\u4f8b\u5982\u4e0b<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F5.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F5.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:243px;height:auto\"\/><\/div><\/figure>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\u8fd9\u91cc\u57fa\u672c\u5757$a+1\u548c$a+2\u7684\u5165\u8fb9\u548c$a\u7684\u51fa\u8fb9\u90fd\u662f\u4e00\u6837\u7684\uff0c\u6240\u4ee5\u8fd9\u91cc\u6709\u4e24\u6761\u63a7\u5236\u6d41\uff0c\u8fd9\u91cc\u6211\u5c31\u76f4\u63a5\u7528\u9012\u5f52\u505a\u7684\uff0c\u7528\u4e00\u4e2a\u6807\u8bb0\u6765\u6807\u8bb0\u5f53\u524d\u5165\u8fb9\u662f\u5426\u662f\u7b2c\u4e00\u6b21\u5339\u914d\uff0c\u82e5\u662f\u7b2c\u4e00\u6b21\u5339\u914d\uff0c\u5219\u6807\u8bb0\u4e3a0\uff0c\u6211\u4eec\u4f1a\u4e0d\u65ad\u8c03\u7528\u9012\u5f52\u7684FindNext\u51fd\u6570\u5bfb\u627e\u4e0b\u4e00\u4e2a\u57fa\u672c\u5757\uff0c\u8fd0\u884c\u5b8c\u4e4b\u540e\u5c06\u6807\u8bb0\u4fee\u6539\u4e3a1\uff0c\u5728\u4e0b\u4e00\u6b21\u5339\u914d\u5230\u5165\u8fb9\u65f6\uff0c\u6211\u4eec\u5219\u67e5\u770b\u6807\u8bb0\uff0c\u82e5\u6807\u8bb0\u4e3a1\uff0c\u5219\u8bf4\u660e\u51fa\u73b0\u4e86\u6d41\u5206\u53c9\u7684\u60c5\u51b5\uff0c\u9700\u8981\u65b0\u5efaGraph\u8fdb\u884c\u4fdd\u5b58\u3002<\/p>\n\n\n\n<p>\u5728\u6210\u529f\u89e3\u6790\u57fa\u672c\u5757\uff0c\u5e76\u6784\u9020Graph\u540e\uff0c\u6211\u4eec\u4f1a\u5c06\u6bcf\u4e2aGraph\u7684BasicBlock_Set\u91cd\u65b0\u8fdb\u884c\u4e00\u6b21\u89e3\u6790\uff0c\u5c06\u5176\u91cd\u65b0\u4ece\u57fa\u672c\u5757\u8f6c\u5316\u6210Q_IR\uff0c\u5e76\u7ecf\u8fc7\u53bb\u91cd\u540e\u4fdd\u5b58\u8fdbQ_IR_Set\u4e2d\uff0c\u5728\u6700\u540eCFG\u7684Graph_Set\u4e2d\uff0c\u5c31\u662f\u4fdd\u5b58\u4e86\u6bcf\u4e2aGraph\u7684\u63a7\u5236\u6d41\uff0c\u800c\u6bcf\u6761\u63a7\u5236\u6d41\u5176\u5b9e\u5c31\u662f\u7ecf\u8fc7\u89e3\u6790\u540e\u7684Q_IR\u96c6\u5408\u3002<\/p>\n\n\n\n<p>\u5728\u9762\u5bf9\u5927\u578b\u9879\u76ee\u65f6\uff0c\u82e5\u5f00\u53d1\u4eba\u5458\u591a\u6b21\u4f7f\u7528\u5206\u652f\u8bed\u53e5\uff0c\u53ef\u80fd\u5bfc\u81f4\u6d41\u7206\u70b8\uff0c\u56e0\u6b64\u5b9e\u73b0\u5728\u89e3\u6790Q_IR\u65f6\u672c\u9879\u76ee\u5c31\u505a\u4e86\u591a\u6b21\u51cf\u679d\u5904\u7406\uff0c\u5728\u5bf9\u6bcf\u6761\u5206\u652f\u8fdb\u884c\u89e3\u6790\u65f6\uff0c\u5982\u679c\u53d1\u73b0\u5176\u4e0d\u6ee1\u8db3\u76f8\u5173\u4f20\u64ad\u60c5\u51b5\uff0c\u6216\u8005\u4e0d\u80fd\u89e3\u6790\u51fa\u5bf9\u5e94\u7684Q_IR\uff0c\u6211\u4eec\u5c31\u4f1a\u4e8b\u5148\u5220\u53bb\u8fd9\u6761\u5206\u652f\uff0c\u5982\u4e0b\u9762\u7684\u4f8b\u5b50<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\nif (true) {\n} elseif (true) {\n} elseif (true) {\n    echo $a;\n}\n<\/code><\/pre>\n\n\n\n<p>\u867d\u7136\u7406\u8bba\u4e0a\u4e00\u5171\u6709\u56db\u6761\u63a7\u5236\u6d41\uff0c\u4f46\u89e3\u6790\u7684\u65f6\u5019\u53ea\u89e3\u6790\u4e24\u6761\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F6.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F6.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:201px;height:auto\"\/><\/div><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F7.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F7.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:195px;height:auto\"\/><\/div><\/figure>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\uff0c\u672c\u6765\u8fd9\u4e2a\u5206\u652f\u8bed\u53e5\u5e94\u8be5\u4f1a\u89e3\u6790\u51fa\u56db\u6761\u63a7\u5236\u6d41\uff0c\u5373\u6700\u5f00\u59cb\u7684if\uff0c\u4e24\u4e2aelseif\uff0c\u548c\u7531\u4e8e\u4e0d\u5b58\u5728else\u51fa\u73b0\u7684\u76f4\u901a\u6d41\u3002\u4f46\u7531\u4e8e\u51cf\u679d\u7684\u5904\u7406\uff0c\u6211\u4eec\u53ea\u89e3\u6790\u4e86\u4e24\u6761\u6709\u6548\u6d41\uff0c\u5373echo $a\u7684\u90a3\u4e00\u6761\u6d41\uff0c\u548c\u6700\u540e\u7684\u76f4\u901a\u6d41\uff0c\u8fd9\u6837\u5c31\u5927\u5927\u51cf\u8f7b\u4e86\u89e3\u6790\u7684\u538b\u529b\u3002\u751a\u81f3\u5728\u6bd4\u8f83\u6781\u7aef\u7684\u60c5\u51b5\u4e0b\uff0c\u5982\u679c\u6574\u4e2a\u5206\u652f\u8bed\u53e5\u7684\u6240\u6709\u5206\u652f\u90fd\u65e0\u6548\uff0c\u6211\u4eec\u4f1a\u76f4\u63a5\u5220\u53bb\u8fd9\u4e2a\u5206\u652f\u8bed\u53e5\uff0c\u5982\u4e0b\u9762\u7684\u4f8b\u5b50\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n$a = 1;\nif (true) {\n} elseif (true) {\n} else {\n}\necho $a;\n<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F8.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F8.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:378px;height:auto\"\/><\/div><\/figure>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\uff0c\u7531\u4e8e\u6574\u4e2aif\u5206\u652f\u8bed\u53e5\u5bf9\u4e8e\u6d41\u7684\u4f20\u64ad\u90fd\u6ca1\u6709\u4efb\u4f55\u5f71\u54cd\uff0c\u6211\u4eec\u76f4\u63a5\u8df3\u8fc7\u4e86\u6574\u4e2aif\u8bed\u53e5\uff0c\u4ece\u7ed3\u679c\u4e0a\u770b\uff0c\u5c31\u50cf\u8fd9\u4e2aif\u8bed\u53e5\u4e0d\u5b58\u5728\u4e00\u6837\uff0c\u7ecf\u8fc7\u591a\u6b21\u526a\u679d\uff0c\u6211\u4eec\u5c31\u6781\u5927\u7684\u63d0\u9ad8\u4e86\u9879\u76ee\u89e3\u6790\u4ee3\u7801\u7684\u901f\u5ea6\uff0c\u4e0d\u8fc7\u5c31\u7b97\u662f\u8fd9\u6837\uff0c\u626b\u5927\u9879\u76ee\u8fd8\u662f\u53ef\u80fd\u4f1a\u5d29\uff0c\u6709\u70b9\u7ef7\u4e0d\u4f4f\uff0c\u540e\u9762\u6709\u673a\u4f1a\u770b\u770b\u522b\u4eba\u600e\u4e48\u505a\u526a\u679d\u7684\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u6c61\u70b9\u6d41\u4f20\u64ad<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Source<\/h3>\n\n\n\n<p>\u5728\u6c61\u70b9\u5206\u6790\u4e2d\uff0cSource\u70b9\u662f\u6570\u636e\u8f93\u5165\u7684\u8d77\u59cb\u4f4d\u7f6e\uff0c\u901a\u5e38\u662f\u7528\u6237\u8f93\u5165\u6216\u5916\u90e8\u6570\u636e\u6765\u6e90\uff0c\u7b80\u5355\u6765\u8bf4\u662f\u4e00\u4e9b\u53ef\u4ee5\u88ab\u7528\u6237\u4fee\u6539\u7684\u53ef\u63a7\u6570\u636e\uff0c\u5728\u672c\u9879\u76ee\u4e2d\uff0c\u9009\u53d6\u7684Source\u70b9\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F9.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F9.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p>\u8fd9\u91cc\u53ef\u4ee5\u81ea\u5df1\u6539\uff0c\u4f46\u76ee\u524d\u53ea\u652f\u6301\u8fd9\u7c7b\u6570\u7ec4\u5f62\u5f0f\u7684Source\u70b9\uff0c\u68c0\u6d4bSource\u7684\u903b\u8f91\u4e5f\u5c31\u662f\u9047\u5230\u6570\u7ec4\u5c31\u6765\u8fd9\u91cc\u5339\u914d\u5339\u914d\u662f\u4e0d\u662f\u63d0\u524d\u8bbe\u5b9a\u7684Source\uff0c\u6211\u4e0d\u592a\u77e5\u9053\u6709\u6ca1\u6709\u4ec0\u4e48\u5176\u4ed6\u7684Source\uff0c\u6211\u611f\u89c9PHP\u91cc\u5e38\u89c1\u7684\u4e5f\u5c31\u8fd9\u7c7b\u4e86\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Sink<\/h3>\n\n\n\n<p>\u8fd9\u91cc\u5148\u53ea\u8bb2\u5185\u7f6e\u51fd\u6570\u7684Sink\uff0c\u7528\u6237\u51fd\u6570\u662f\u53e6\u4e00\u5957\u903b\u8f91\uff0c\u53cd\u6b63\u5927\u6982\u4e5f\u5c31\u8fd9\u6837\uff0c\u60f3\u6539\u6309\u8fd9\u4e2a\u683c\u5f0f\u6539\u5c31\u884c\u4e86\uff0c\u68c0\u6d4bSink\u7684\u903b\u8f91\u5c31\u662f\u9047\u5230\u51fd\u6570\u6267\u884c\u6765\u8fd9\u91cc\u5339\u914d\u770b\u662f\u4e0d\u662f\u63d0\u524d\u8bbe\u5b9a\u597d\u7684Sink\u51fd\u6570\uff0c\u662f\u7684\u8bdd\u53bb\u5339\u914d\u4e00\u4e0b\u4f20\u6765\u7684\u53c2\u6570\u662f\u4e0d\u662f\u6c61\u70b9\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F10.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F10.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Sanitizer<\/h3>\n\n\n\n<p>Sanitizer\u91cc\u53ef\u4ee5\u52a0\u7528\u6237\u51fd\u6570\u6216\u8005\u5185\u7f6e\u51fd\u6570\uff0c\u5bf9\u4e8e\u4e0d\u662fSanitizer\u7684\u51fd\u6570\uff0c\u4e00\u5f8b\u9ed8\u8ba4\u4e3atransfer\uff0c\u6bd4\u5982$a = b($c)\u8fd9\u4e2a\u4ee3\u7801\uff0c\u5982\u679c\u53d1\u73b0b\u51fd\u6570\u662f\u4e00\u4e2aSanitizer\uff0c\u76f4\u63a5\u622a\u65ad\u6c61\u70b9\u6d41\u4f20\u64ad\uff0c\u5982\u679c\u4e0d\u662f\uff0c\u5c31\u8ba4\u4e3a\u662ftransfer\uff0c\u7136\u540e\u53bb\u770b\u7ed9b\u4f20\u5165\u7684\u53c2\u6570\u91cc\u662f\u5426\u5b58\u5728\u6c61\u70b9\uff0c\u53ea\u8981\u5b58\u5728\u4e00\u4e2a\u6c61\u70b9\uff0c\u90a3\u4e48\u5c31\u4f20\u64ad\u7ed9$a\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F11.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F11.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f20\u64ad<\/h3>\n\n\n\n<p>\u8fd9\u91cc\u7b97\u662f\u91cd\u5934\u620f\u4e86\uff0c\u751a\u81f3\u53ef\u4ee5\u8bf4\u6c61\u70b9\u5206\u6790\u7684\u5173\u952e\u5c31\u5728\u8fd9\u91cc\uff0c\u7531\u4e8e\u53ea\u6709\u53d8\u91cf\u624d\u53ef\u80fd\u662f\u6c61\u70b9\uff0c\u56e0\u6b64\u6211\u505a\u4e86\u4e00\u4e2a\u53d8\u91cf\u8868\uff0c\u5bf9\u4e8e\u53d8\u91cf\u7684\u4fe1\u606f\u5b9a\u4e49\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>class VarInfo\n{\n    public $linenum; \/\/\u884c\u53f7\n    public $tainted; \/\/\u662f\u5426\u6c61\u67d3\n\n    public function __construct($linenum, $tainted)\n    {\n        $this-&gt;linenum = $linenum;\n        $this-&gt;tainted = $tainted;\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u53d8\u91cf\u7684\u4fe1\u606f\u91cc\u4fdd\u5b58\u4e86\u81ea\u5df1\u7684\u884c\u53f7\u548c\u6c61\u67d3\u60c5\u51b5\uff0c\u7136\u540e\u5728\u4ee3\u7801\u91cc\u505a\u4e86\u4e00\u4e2a\u53d8\u91cf\u8868$varMap\uff0c\u5982\u4ee3\u7801$varMap = [&#8220;VarName1&#8221; =&gt; new VarInfo(10, 1)]\uff0c\u5c31\u8868\u793a\u5c31\u8868\u793a\u5728\u53d8\u91cf\u8868\u4e2d\u4f7f\u7528\u8be5\u53d8\u91cf\u7684\u540d\u79f0VarName1\u4f5c\u4e3a\u53d8\u91cf\u8868\u7684\u7d22\u5f15\uff0c\u5728\u6570\u7ec4\u4e2d\u4ee5\u5bf9\u8c61\u7684\u5f62\u5f0f\u4fdd\u5b58\u4e86\u53d8\u91cf\u7684\u5177\u4f53\u4fe1\u606f\uff0c\u4e5f\u5c31\u662f\u5b83\u884c\u53f7\u4e3a10\uff0c\u88ab\u6c61\u67d3\u3002<\/p>\n\n\n\n<p>\u7531\u4e8e\u5728\u5212\u5206\u63a7\u5236\u6d41\u4e4b\u540e\uff0c\u6bcf\u4e2a\u63a7\u5236\u6d41\u5bf9\u5e94\u7684Q_IR\u96c6\u5408\u90fd\u662f\u5355\u4e00\u4e14\u6709\u5e8f\u7684\uff0c\u56e0\u6b64\u6211\u4eec\u8fdb\u884c\u6d41\u7684\u4f20\u64ad\u53ea\u9700\u8981\u4ece\u7b2c\u4e00\u6761Q_IR\u5f00\u59cb\u987a\u5e8f\u904d\u5386\u5373\u53ef\u3002\u5728\u5224\u65ad\u51fa\u67d0\u4e2aQ_IR\u7684opcode\u662f Expr_Assign \u65f6\uff0c\u6211\u4eec\u5c31\u77e5\u9053\u8fd9\u662f\u5728\u5bf9\u67d0\u4e2a\u53d8\u91cf\u8fdb\u884c\u8d4b\u503c\uff0c\u51fa\u73b0\u4e86\u6c61\u70b9\u4f20\u64ad\u7684\u60c5\u51b5\uff0c\u5bf9\u4e8e\u8d4b\u503c\u7c7b\u7684\u4ee3\u7801\uff0c\u5982$a = $b\uff0c\u6211\u4eec\u5728\u4e4b\u524d\u89e3\u6790\u51fa\u6765\u7684 Q_IR \u683c\u5f0f\u4e3a{ &#8220;Expr_Assign&#8221;\uff0cnull\uff0c$b\u7684id\u6216\u8005$b\uff0c$a}\uff0c\u5373\u5728operand1\u548coperand2\u4e2d\u586b\u5199\u8be5\u53d8\u91cf\u88ab\u8d4b\u503c\u7684\u60c5\u51b5\uff0c\u5982\u679c\u53f3\u8fb9\u662f\u4e00\u4e2a\u8868\u8fbe\u5f0f\uff0c\u90a3\u4e48\u6765\u6e90\u662f\u5bf9\u5e94\u8868\u8fbe\u5f0fQ_IR\u7684id\uff1b\u5982\u679c\u53f3\u8fb9\u662f\u4e00\u4e2a\u5355\u53d8\u91cf\u6216\u8005\u5b57\u7b26\u4e32\uff0c\u4f1a\u76f4\u63a5\u586b\u5199\u53d8\u91cf\u6216\u8005\u5b57\u7b26\u4e32\uff0c\u56e0\u6b64\u4e3a\u4e86\u5224\u65ad\u88ab\u8d4b\u503c\u7684\u53d8\u91cf\u662f\u5426\u88ab\u6c61\u67d3\uff0c\u6211\u4eec\u53ea\u9700\u8981\u5224\u65ad\u53d8\u91cf\u7684\u6765\u6e90\u5373\u53ef\uff0c\u82e5\u6765\u6e90\u88ab\u6c61\u67d3\uff0c\u90a3\u4e48\u8be5\u53d8\u91cf\u4e00\u5b9a\u4e5f\u88ab\u6c61\u67d3\u4e86\uff0c\u6211\u4eec\u4f1a\u5728\u53d8\u91cf\u8868\u4e2d\u5b9e\u65f6\u66f4\u65b0\u6bcf\u4e2a\u53d8\u91cf\u7684\u4fe1\u606f\u3002<\/p>\n\n\n\n<p>\u4e00\u4e2a\u5178\u578b\u7684Source\u70b9\u6d41\u51fa\u6c61\u70b9\u6570\u636e\u7684\u4f8b\u5b50\uff0c\u5c31\u662f$a = $_POST[1]\uff0c\u5176\u89e3\u6790\u51fa\u6765\u7684Q_IR\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F12.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F12.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:390px;height:auto\"\/><\/div><\/figure>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\u8d4b\u503c\u8bed\u53e5\u89e3\u6790\u51fa\u6765\u7684Q_IR\u683c\u5f0f\u4e3a{ &#8220;Expr_Assign&#8221;\uff0cnull\uff0c\u8868\u8fbe\u5f0f\u7684id\uff0c\u53d8\u91cfa}\uff0c\u8fd9\u65f6\u6211\u4eec\u60f3\u8981\u5224\u65ad\u53d8\u91cfa\u662f\u5426\u88ab\u6c61\u67d3\uff0c\u53ea\u9700\u8981\u5224\u65ad\u6765\u6e90\u662f\u5426\u88ab\u6c61\u67d3\uff0c\u5728\u5bf9id\u7c7b\u6765\u6e90\u8fdb\u884c\u68c0\u9a8c\u65f6\uff0c\u5982\u679c\u5224\u65ad\u51fa\u8be5\u8868\u8fbe\u5f0f\u662f$_POST\u8fd9\u7c7b\u6570\u7ec4\u8d4b\u503c\uff0c\u6211\u4eec\u5c31\u4f1a\u53bb\u63d0\u524d\u68c0\u67e5\u8be5\u6570\u7ec4\u662f\u5426\u5728Source\u96c6\u5408\u4e2d\uff0c\u82e5\u5b58\u5728\u6bd4\u5982$_POST\uff0c\u6211\u4eec\u5c31\u4f1a\u5224\u65ad\u8be5\u6765\u6e90\u88ab\u6c61\u67d3\uff0c\u5411\u53d8\u91cf$a\u8fd4\u56de\u88ab\u6c61\u67d3\uff0c\u5982\u5bf9\u4e8e\u4e0a\u9762\u7684\u4f8b\u5b50\uff0c\u6211\u4eec\u6253\u5370\u53d8\u91cf\u8868\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F13.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F13.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p>\u6b64\u65f6\u6211\u4eec\u5728\u6c61\u70b9\u8868\u5c31\u4fdd\u5b58\u4e86\u53d8\u91cfa\u7684\u4fe1\u606f\uff0c\u53ef\u4ee5\u770b\u5230\u5176\u7d22\u5f15\u4e3a\u81ea\u5df1\u7684\u53d8\u91cf\u540da\uff0c\u4ee3\u7801\u884c\u53f7\u4e3a2\uff0c\u88ab\u6c61\u67d3\u3002\u5728\u4f20\u64ad\u8fc7\u7a0b\u4e2d\u4e5f\u53ef\u80fd\u51fa\u73b0\u539f\u672c\u88ab\u6c61\u67d3\u7684\u53d8\u91cf\u5931\u53bb\u5371\u5bb3\u7684\u60c5\u51b5\uff0c\u8fd9\u65f6\u6211\u4eec\u5c31\u4f1a\u6e05\u695a\u5176\u6c61\u70b9\u6807\u8bb0\uff0c\u5e76\u66f4\u65b0\u5f53\u524d\u7684\u4fe1\u606f\uff0c\u6bd4\u5982\u53d8\u91cf$a\u7684\u6570\u636e\u5728\u4f20\u64ad\u8fc7\u7a0b\u53ef\u80fd\u4f1a\u7ecf\u8fc7Sanitizer\uff0c\u5982\u4e0b\u9762\u7684\u4f8b\u5b50\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n$a = $_POST&#91;1];\n$a = htmlspecialchars($a);\n<\/code><\/pre>\n\n\n\n<p>\u6b64\u65f6\u7684\u53d8\u91cf\u8868\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F14.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F14.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\u5f53\u6211\u4eec\u5bf9\u53d8\u91cf$a\u8fdb\u884c\u4e8c\u6b21\u8d4b\u503c\uff0c\u5e76\u4e14\u662f\u7ecf\u8fc7Sanitizer\u4e2d\u7684htmlspecialchars\u51fd\u6570\u65f6\uff0c\u5728\u53d8\u91cf\u8868\u4e2d\u6211\u4eec\u4f1a\u66f4\u65b0\u4ed6\u7684\u4fe1\u606f\uff0c\u73b0\u5728\u6700\u65b0\u7684\u53d8\u91cf$a\u5bf9\u5e94\u884c\u53f7\u4e3a3\uff0c\u5e76\u4e14\u4e0d\u518d\u88ab\u6c61\u67d3\uff0c\u8fd9\u6837\u5c31\u5904\u7406\u4e86\u88abSanitizer\u622a\u65ad\u540e\u6c61\u70b9\u4f20\u64ad\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n<p>\u5728\u4f20\u64ad\u6c61\u70b9\u7684\u8fc7\u7a0b\u4e2d\uff0c\u4e0d\u4f46\u4f1a\u9047\u5230\u53d8\u91cf\uff0c\u4e5f\u53ef\u80fd\u9047\u5230\u51fd\u6570\uff0c\u9047\u5230\u51fd\u6570\u65f6\u9996\u5148\u6211\u4eec\u9700\u8981\u5224\u65ad\u8be5\u51fd\u6570\u662f\u5426\u5728Sink\u70b9\u4e2d\uff0c\u662f\u5426\u662f\u5371\u9669\u51fd\u6570\u7684\u4e00\u79cd\uff0c\u82e5\u662f\u5371\u9669\u51fd\u6570\u6211\u4eec\u5c31\u9700\u8981\u5224\u65ad\u5411\u8be5\u51fd\u6570\u4f20\u5165\u7684\u53c2\u6570\u662f\u5426\u88ab\u6c61\u67d3\uff0c\u82e5\u88ab\u6c61\u67d3\u5c31\u8bf4\u660e\u5b58\u5728\u4e00\u6761\u4eceSource\u70b9\u5230Sink\u70b9\u7684\u8def\u5f84\uff0c\u4ee3\u7801\u5b58\u5728\u5b89\u5168\u98ce\u9669\uff0c\u5982\u5bf9\u4e8e\u4e0b\u9762\u7684\u4f8b\u5b50\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n$a = $_POST&#91;1];\nsystem($a);<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F15.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F15.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:306px;height:auto\"\/><\/div><\/figure>\n\n\n\n<p>\u5728\u524d\u9762\u7684\u5206\u6790\u4e2d\uff0c\u6211\u4eec\u5df2\u7ecf\u77e5\u9053$a\u5c5e\u4e8e\u6c61\u70b9\uff0c\u6b64\u5904\u4e0d\u518d\u8d58\u8ff0\u3002\u5728\u6c61\u70b9\u6d41\u7684\u4f20\u64ad\u9047\u5230\u5371\u9669\u51fd\u6570system\u540e\uff0c\u6211\u4eec\u4f1a\u904d\u5386\u5176\u4f5c\u7528\u57df\uff0c\u5bfb\u627e\u8fd9\u4e2a\u51fd\u6570\u7684\u53c2\u6570\uff0c\u5373opcode\u4e3aInternal_Call_Param\u7684Q_IR\uff0c\u82e5\u5728\u53d8\u91cf\u8868\u53d1\u73b0\u5b83\u88ab\u6c61\u67d3\uff0c\u90a3\u4e48\u5c31\u8ba4\u4e3a\u5371\u9669\u51fd\u6570\u88ab\u89e6\u53d1\uff0c\u5b58\u5728\u4e00\u6761\u6d41\u5411Sink\u70b9\u7684\u6c61\u70b9\u6d41\uff0c\u7136\u540e\u521b\u5efa\u76f8\u5173\u7684Sink\u5bf9\u8c61\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F16.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F16.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:320px;height:auto\"\/><\/div><\/figure>\n\n\n\n<p>\u5728Sink\u5bf9\u8c61\u4e2d\uff0c\u6211\u4eec\u4fdd\u5b58\u4e86\u8be5\u6f0f\u6d1e\u7684\u7c7b\u578b\u3001\u51fd\u6570\u540d\u79f0\u3001\u4f20\u64ad\u8def\u5f84\u548c\u89e6\u53d1\u70b9\u884c\u53f7\uff0c\u65b9\u4fbf\u4f7f\u7528\u8005\u8fdb\u884c\u8fdb\u4e00\u6b65\u7684\u5206\u6790\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">DirtyFunc(v1.0~v1.1\u7684\u601d\u8def\uff0cv1.2\u4e2d\u5df2\u7ecf\u5e9f\u5f03)<\/h2>\n\n\n\n<p>DirtyFunc\u8fd9\u4e2a\u529f\u80fd\u662f\u6211\u5f00\u53d1\u4e4b\u540e\u53c8\u52a0\u4e0a\u7684\uff0c\u4e3a\u4ec0\u4e48\u5462\uff0c\u8fd9\u5c31\u8981\u8bf4\u5230\u4e3a\u4ec0\u4e48\u6211\u4e4b\u524d\u4e0d\u4ecb\u7ecd\u7528\u6237\u51fd\u6570\u7684\u5904\u7406\u4e86\u3002\u5728\u6211\u6700\u521d\u7684\u8bbe\u8ba1\u4e2d\uff0c\u6211\u7684\u60f3\u6cd5\u662f\uff0c\u5728\u89e3\u6790\u4ee3\u7801\u4e4b\u524d\u9996\u5148\u89e3\u6790\u4e00\u904d\u7528\u6237\u51fd\u6570\u7684\u58f0\u660e\uff0c\u4fdd\u5b58\u5230\u51fd\u6570\u8868\u4e2d\uff0c\u5927\u6982\u957f\u8fd9\u6837\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F17.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F17.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p>\u5728\u8fd0\u884c\u4ee3\u7801\u4e4b\u524d\uff0c\u9996\u5148\u5bf9\u6bcf\u4e2a\u7528\u6237\u51fd\u6570\u5355\u72ec\u505a\u4e00\u6b21\u6c61\u70b9\u4f20\u64ad\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u6bd4\u5982\u51fd\u6570function a($b)\uff0c\u6211\u4eec\u5c31\u628a$b\u76f4\u63a5\u6807\u8bb0\u6210\u6c61\u70b9\uff0c\u7136\u540e\u5c06\u51fd\u6570a\u7684\u58f0\u660e\u4f5c\u4e3a\u4e00\u4e2a\u5355\u72ec\u7684\u4f5c\u7528\u57df\uff0c\u7528\u4f20\u5165\u7684\u53c2\u6570\u8fdb\u884c\u4e00\u6b21\u6c61\u70b9\u4f20\u64ad\uff0c\u5982\u679c\u89e6\u53d1\u4e86Sink\u70b9\uff0c\u6211\u4eec\u5c31\u4e5f\u5c06\u8fd9\u4e2a\u7528\u6237\u51fd\u6570a\u89c6\u4f5cSink\u70b9\uff0c\u5728\u51fd\u6570\u8868\u91cc\u7ed9\u5b83\u7684funcSink\u6807\u8bb0\u4e3atrue\uff0c\u7136\u540e\u540e\u9762\u548c\u5176\u4ed6\u5185\u7f6e\u7684Sink\u51fd\u6570\u4e00\u4e2a\u5f85\u9047\u5904\u7406\u3002\u4e0d\u8fc7\u8fd9\u4e1c\u897f\u6d4b\u4e00\u4e9b\u7b80\u5355\u4ee3\u7801\u8fd8\u53ef\u4ee5\uff0c\u4f46\u9762\u5bf9\u5927\u9879\u76ee\u6709\u51e0\u4e2a\u95ee\u9898\uff0c\u9996\u5148\uff0c\u6211\u8fd9\u4e2a\u5de5\u5177\u53ea\u80fd\u505a\u5355\u6587\u4ef6\u7684\u6c61\u70b9\u4f20\u64ad\uff0c\u6240\u4ee5\u662f\u4e0d\u652f\u6301\u8de8\u6587\u4ef6\u7684\u6c61\u70b9\u4f20\u64ad\u7684\uff0c\u800c\u771f\u5b9e\u9879\u76ee\u91cc\u51fd\u6570\u7684\u58f0\u660e\u548c\u8c03\u7528\u4f4d\u7f6e\u4e00\u822c\u90fd\u4e0d\u662f\u4e00\u8d77\u7684\uff0c\u6240\u4ee5\u8fd9\u73a9\u610f\u513f\u89e3\u6790\u4e5f\u6ca1\u5565\u7528\uff0c\u5176\u6b21\uff0c\u5c31\u662f\u592a\u5bb9\u6613\u5d29\u4e86\uff0c\u7279\u522b\u662f\u6709\u4e9b\u9879\u76ee\u505a\u7684\u51fd\u6570\u592a\u591a\u4e86\uff0c\u626b\u7740\u626b\u7740\u5185\u5b58\u5c31\u70b8\u4e86\u3002<\/p>\n\n\n\n<p>\u5728\u6211\u7684\u628aAST\u89e3\u6790\u5230IR\u7684\u6587\u4ef6\u91cc\u8fd8\u80fd\u770b\u5230\u5efa\u51fd\u6570\u8868\u7684\u529f\u80fd\uff0c\u4e0d\u8fc7\u9ed8\u8ba4\u662f\u6ce8\u91ca\u6389\u4e86\uff0c\u8dd1\u5355\u6587\u4ef6\u8fd8\u53ef\u4ee5\uff0c\u8dd1\u5927\u9879\u76ee\u6ca1\u5375\u7528<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F18.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F18.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p>\u540e\u6765\u6211\u60f3\u4e86\u4e00\u4e2a\u66ff\u4ee3\u65b9\u6cd5\uff0c\u4e5f\u662f\u626b\u5b9a\u4e49\uff0c\u4e0d\u8fc7\u5c31\u4e0d\u5efa\u7acb\u51fd\u6570\u8868\u4e86\uff0c\u800c\u662f\u548c\u4e4b\u524d\u626b\u6587\u4ef6\u5185\u5bb9\u4e00\u4e2a\u7ea7\u522b\u7684\u529f\u80fd\uff0c\u4e13\u95e8\u7528\u6765\u626b\u51fd\u6570\u5b9a\u4e49\uff0c\u6211\u628a\u5b83\u53eb\u505aDirtyFunc\uff0c\u4e5f\u5c31\u662f\u810f\u51fd\u6570\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F19.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F19.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\u8fd9\u91cc\u6211\u5b9a\u4e49\u4e86\u4e00\u5806\u5c5e\u6027\uff0c\u5728\u6b63\u5e38\u7684Sink\u57fa\u7840\u4e0a\uff0c\u591a\u4e86\u65b9\u6cd5\u540d\u548c\u6761\u4ef6\uff0c\u8fd9\u4e2a\u6761\u4ef6\u662f\u4ec0\u4e48\u610f\u601d\u5462\uff1f\u4e3b\u8981\u662f\u8003\u8651\u5230\u8fd9\u79cd\u60c5\u51b5\uff0c\u5728\u4e4b\u524d\u7684\u8bbe\u8ba1\u4e2d\uff0c\u6211\u662f\u628a\u7ed9\u51fd\u6570\u4f20\u5165\u7684\u6240\u6709\u53c2\u6570\u5168\u90e8\u89c6\u4f5c\u6c61\u70b9\uff0c\u7136\u540e\u505a\u6c61\u70b9\u4f20\u64ad\uff0c\u6bd4\u5982\u8fd9\u79cd\u51fd\u6570\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\nfunction test($a){\nsystem($a);\n}<\/code><\/pre>\n\n\n\n<p>\u4f46\u540e\u9762\u53c8\u8003\u8651\u5230\uff0c\u5728\u4e00\u4e9b\u771f\u5b9e\u7684\u4ee3\u7801\u4e2d\uff0c\u51fd\u6570\u4e0d\u4e00\u5b9a\u6709\u53c2\u6570\uff0c\u5c31\u7b97\u6709\u53c2\u6570\u4e5f\u4e0d\u4e00\u5b9a\u662f\u9760\u8fd9\u4e2a\u4f20\u5165\u7684\u53c2\u6570\u6c61\u67d3\u7684\uff0c\u6bd4\u5982\u4e0b\u9762\u7684\u4f8b\u5b50\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\nfunction test($a){\n$b = $_POST&#91;1];\nsystem($b);\n}<\/code><\/pre>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\u6574\u4e2a\u4f20\u6765\u7684\u53c2\u6570$a\u6c61\u67d3\u4e0e\u5426\u548c\u6574\u4e2a\u51fd\u6570\u662f\u5426\u6709\u5371\u5bb3\u6ca1\u6709\u4ec0\u4e48\u5173\u7cfb\uff0c\u6240\u4ee5\u6211\u5206\u4e86\u4e24\u7c7b\u60c5\u51b5\uff0c\u662f\u6709\u6761\u4ef6\u7684Sink\u51fd\u6570\u8fd8\u662f\u65e0\u6761\u4ef6\u7684Sink\u51fd\u6570\uff0c\u5bf9\u4e8e\u6709\u6761\u4ef6\u7684Sink\u51fd\u6570\uff0c\u5c31\u662f\u5c06\u4f20\u5165\u53c2\u6570\u6807\u8bb0\u4e3a\u6c61\u70b9\u540e\u624d\u89e6\u53d1Sink\u7684\u51fd\u6570\uff0c\u5728\u5bf9\u5177\u4f53\u4ee3\u7801\u5185\u5bb9\u4f20\u64ad\u7684\u65f6\u5019\uff0c\u4e5f\u9700\u8981\u5224\u65ad\u8fd9\u4e2a\u4f20\u6765\u7684\u53c2\u6570\u662f\u5426\u53ef\u63a7\u624d\u80fd\u89e6\u53d1Sink\u3002\u800c\u65e0\u6761\u4ef6\u7684Sink\u51fd\u6570\u5c31\u7b80\u5355\u4e86\uff0c\u65e0\u8bba\u4f60\u4f20\u5165\u7684\u53c2\u6570\u6c61\u67d3\u4e0e\u5426\uff0c\u6211\u662f\u5728\u51fd\u6570\u5185\u90e8\u4e0d\u9700\u8981\u53c2\u6570\u7684\u60c5\u51b5\u4e0b\u5c31\u80fd\u89e6\u53d1\u7684\uff0c\u6240\u4ee5\u4e5f\u4e0d\u9700\u8981\u5224\u65ad\u4f60\u8fd9\u4e2a\u53c2\u6570\uff0c\u751a\u81f3\u4f60\u53d1\u73b0\u4ed6\u662f\u65e0\u6761\u4ef6\u7684Sink\uff0c\u5728\u9879\u76ee\u91cc\u5168\u5c40\u641c\u7d22\u4e00\u4e0b\u8fd9\u4e2a\u51fd\u6570\u5c31\u884c\u4e86\uff0c\u4e5f\u4e0d\u7528\u505a\u4ec0\u4e48\u4f20\u64ad\u3002<\/p>\n\n\n\n<p>\u8fd9\u6837\u7684\u8bdd\u7b97\u662f\u4e00\u79cd\u5bf9\u4e0d\u80fd\u8de8\u6587\u4ef6\u6c61\u70b9\u4f20\u64ad\u7684\u4e00\u79cd\u66ff\u4ee3\u65b9\u6848\uff0c\u4f60\u53ea\u9700\u8981\u5148\u626b\u4e00\u904d\u51fd\u6570\u7684\u58f0\u660e\uff0c\u7136\u540e\u628a\u662fSink\u7684\u7528\u6237\u51fd\u6570\u52a0\u5230Sink\u7684\u5217\u8868\u91cc\u5c31\u884c\u4e86\uff0c\u8fd9\u6837\u5c31\u4f1a\u548c\u5185\u7f6e\u51fd\u6570\u4e00\u6837\u6b63\u5e38\u4f20\u64ad\u548c\u89e6\u53d1\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u5982\u4f55\u9009\u53d6Source\u548cSink<\/strong>(v1.2\u66f4\u65b0)<\/h2>\n\n\n\n<p>\u5728\u5f53\u524d\u7684\u8bbe\u8ba1\u4e2d\uff0c\u6211\u6709\u610f\u5ffd\u7565\u4e86\u4e24\u70b9\uff0c\u800c\u8fd9\u4e24\u70b9\u5176\u5b9e\u5bf9\u4e8e\u6c61\u70b9\u5206\u6790\u7684\u8bbe\u8ba1\u5176\u5b9e\u6709\u7740\u81f3\u5173\u91cd\u8981\u7684\u4f5c\u7528\u2014\u2014\u90a3\u5c31\u662f<strong>\u5982\u4f55\u9009\u53d6Source\u548cSink<\/strong>\u3002<\/p>\n\n\n\n<p>\u4ece\u4e0a\u9762\u7684\u63cf\u8ff0\u91cc\u5176\u5b9e\u53ef\u4ee5\u6bd4\u8f83\u660e\u663e\u7684\u53d1\u73b0\uff0c\u6211\u662f\u9ed8\u8ba4\u5927\u5bb6\u81ea\u5df1\u624b\u52a8\u8bc6\u522bsource\u548csink\u7684\uff0c\u5bf9\u4e8e\u4e00\u4e9b\u666e\u901a\u7684PHP\u9879\u76ee\uff0c\u5f00\u53d1\u8005\u53ef\u80fd\u53ea\u4f1a\u4f7f\u7528$_POST\u3001system\u8fd9\u7c7b\u5185\u7f6e\u7684php\u7528\u6cd5\u548c\u51fd\u6570\uff0c\u8fd9\u5176\u5b9e\u662f\u80fdcover\u7684\uff0c\u56e0\u4e3a\u8fd9\u4e9b\u5c5e\u4e8e\u5927\u5bb6\u90fd\u77e5\u9053\u7684source\u548csink\uff0c\u4f46\u5982\u679c\u5f00\u53d1\u8005\u4f7f\u7528\u4e86\u4e00\u4e9b\u6846\u67b6\uff0c\u6216\u8005\u5b8c\u5168\u662f\u81ea\u5df1\u5b9e\u73b0\u7684source\u548csink\uff0c\u90a3\u4e48\u6211\u4eec\u8be5\u600e\u4e48\u53d1\u73b0\u4ed6\u4eec\u5462\uff0c\u96be\u9053\u9700\u8981\u5b89\u5168\u5de5\u7a0b\u5e08\u901a\u8bfb\u6e90\u7801\uff0c\u627e\u5230\u6240\u6709source\u548csink\u5417\ud83e\udd14\uff0c\u5982\u679c\u662f\u8fd9\u6837\u7684\u8bdd\uff0c\u6c61\u70b9\u5206\u6790\u4f3c\u4e4e\u4e5f\u6ca1\u4ec0\u4e48\u7528\u4e86\uff0c\u5b8c\u5168\u8fdd\u80cc\u4e86\u4f7f\u7528\u6c61\u70b9\u5206\u6790\u51cf\u8f7b\u5b89\u5168\u5ba1\u8ba1\u65f6\u95f4\u7684\u76ee\u7684\uff0c\u800c\u73b0\u5728\u6700\u6f6e\u6d41\u7684\u505a\u6cd5\uff0c\u5176\u5b9e\u662fllm+\u6c61\u70b9\u5206\u6790\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5982\u4f55\u9009\u53d6Source<\/h3>\n\n\n\n<p>\u5982\u4f55\u8ba9llm\u8f85\u52a9\u6c61\u70b9\u5206\u6790\u5462\uff0c\u9996\u5148\uff0c\u80af\u5b9a\u4e0d\u662f\u95eeai\u8fd9\u4e2a\u9879\u76ee\u91cc\u6240\u6709source\u5230sink\u7684\u8def\u5f84\uff0c\u8fd9\u6837\u7684\u4f5c\u6cd5\u80af\u5b9a\u662f\u4e0d\u53ef\u80fd\u5b8c\u6210\u7684\uff0c\u800c\u4e00\u4e2a\u66f4\u73b0\u5b9e\u7684\u601d\u8def\uff0c\u5c31\u662f\u53ea\u5229\u7528ai\u5bfb\u627e\u6240\u6709source\u70b9\uff0c\u76f8\u6bd4\u4e8e\u8be2\u95ee\u6240\u6709\u8def\u5f84\uff0c\u76f4\u63a5\u8be2\u95ee AI \u6240\u6709\u53ef\u63a7\u70b9\u8981\u5bb9\u6613\u5f97\u591a\uff0c\u8fd9\u91cc\u63a8\u8350\u4e00\u7bc7\u817e\u8baf\u4e91\u9f0e\u5b9e\u9a8c\u5ba4\u7684\u6587\u7ae0\uff1a<a href=\"https:\/\/mp.weixin.qq.com\/s\/_X1b8A5b5MQjsCxPRHmFvQ\">\u4ece\u4eba\u5de5\u56f0\u5c40\u5230\u667a\u80fd\u7834\u5c40 &#8211; 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class=\"wp-block-heading\">\u5982\u4f55\u9009\u53d6Sink<\/h3>\n\n\n\n<p>\u9996\u5148\uff0c\u5982\u679c\u5f00\u53d1\u8005\u662f\u5b8c\u5168\u81ea\u5df1\u5b9e\u73b0\u7684\u4e00\u4e2a\u529f\u80fd\uff0c\u6bd4\u5982\u6211\u4eec\u77e5\u9053sql\u67e5\u8be2\u7684\u672c\u8d28\u5176\u5b9e\u5c31\u662f\u6784\u9020web\u670d\u52a1\u548c\u6570\u636e\u5e93\u670d\u52a1\u901a\u8baf\u7684\u4e8c\u8fdb\u5236\u534f\u8bae\uff0c\u5982\u679c\u5f00\u53d1\u8005\u5b8c\u5168\u81ea\u5df1\u5b9e\u73b0\u4e00\u4e2a\u8fd9\u79cd\u901a\u8baf\u534f\u8bae\uff0c\u90a3\u4e48\u8fd8\u5f97ai\u51fa\u624b\u4e86\uff0c\u60f3\u8981\u81ea\u5df1\u8bc6\u522b\u53ea\u80fd\u628a\u8fd9\u4e2a\u9879\u76ee\u6240\u6709\u4ee3\u7801\u770b\u5b8c\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u4e0d\u662f\u8fd9\u79cd\u6bd4\u8f83\u6781\u9650\u7684\u60c5\u51b5\uff0c\u5f00\u53d1\u8005\u53ea\u662f\u81ea\u5df1\u5c01\u88c5\u4e86\u4e00\u4e2a\u529f\u80fd\uff0c\u4e00\u6b21\u4e00\u6b21\u7684\u8c03\u7528\u6700\u540e\u8fd8\u662f\u4f1a\u5230\u8fbe\u6700\u540e\u7684\u5185\u7f6e\u51fd\u6570\uff0c\u6bd4\u5982\u5185\u7f6e\u7684mysqli_query\uff0c\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\u6211\u4eec\u8fd8\u662f\u80fd\u81ea\u5df1\u8bc6\u522b\u7684\uff0c\u6bd4\u5982\u4e0b\u9762\u7684\u4f8b\u5b50\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n\/\/1.php\nfunction a($c)\n{\n    b($c);\n}<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n\/\/2.php\nfunction b($c)\n{\n    c($c, null, null);\n}<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n\/\/3.php\nfunction c($c, $d, $e)\n{\n    system($c);\n}<\/code><\/pre>\n\n\n\n<p>\u57281.php\u30012.php\u548c3.php\u5206\u522b\u6709\u4e09\u4e2a\u7528\u6237\u81ea\u5b9a\u4e49\u51fd\u6570\uff0c\u800c\u6700\u540e\u7684\u89e6\u53d1\u70b9\u5728\u4e00\u4e2a\u5355\u72ec\u7684main.php\u91cc\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250410-005107-24.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250410-005107-24.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p>\u5982\u679c\u662f\u4e4b\u524d\u7684\u5904\u7406\u903b\u8f91\uff0c\u5373\u4f7f\u662fdirty_func\u529f\u80fd\uff0c\u7531\u4e8e\u53ea\u80fd\u5355\u6587\u4ef6\u4f20\u64ad\uff0c\u4e5f\u662f\u68c0\u9a8c\u4e0d\u51fa\u8fd9\u4e2asink\u70b9\u7684\uff0c\u800c\u8fd9\u5c31\u662f\u4e0b\u9762\u63a2\u8ba8\u7684\u5185\u5bb9\uff0c\u5982\u4f55\u5b9e\u73b0\u65b9\u6cd5\u7ea7\u7684\u8de8\u6587\u4ef6\u6c61\u70b9\u4f20\u64ad\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u65b9\u6cd5\u7ea7\u7684\u8de8\u6587\u4ef6\u6c61\u70b9\u4f20\u64ad<\/h3>\n\n\n\n<p>\u8fd9\u91cc\u6211\u4f7f\u7528\u7684\u65b9\u6cd5\u5176\u5b9e\u662f\u5b58\u5728\u8bef\u62a5\u7684\uff0c\u56e0\u4e3a\u6211\u5e76\u6ca1\u6709\u9650\u5b9a\u6bcf\u4e2a\u51fd\u6570\u5230\u5e95\u662f\u5728\u54ea\u4e2a\u4f5c\u7528\u57df\u91cc\uff0c\u53ef\u80fd\u5b58\u5728\u91cd\u540d\u51fd\u6570\u7684\u95ee\u9898\uff0c\u4e0d\u8fc7\u7531\u4e8e\u6211\u8fd9\u4e2a\u9879\u76ee\u672c\u6765\u7684\u68c0\u6d4b\u6b63\u786e\u7387\u5c31\u4f4e\u7684\u611f\u4eba\uff0c\u8fd9\u4e00\u70b9\u4e5f\u5c31\u6682\u65f6\u4e0d\u8003\u8651\u4e86\ud83d\ude02<\/p>\n\n\n\n<p>\u73b0\u5728\u7684dirty_func\u529f\u80fd\uff0c\u4f1a\u89e3\u6790\u5e76\u4fdd\u5b58\u6307\u5b9a\u76ee\u5f55\u91cc\u7684\u6240\u6709\u6587\u4ef6\u7684\u51fd\u6570\u5230\u4e00\u4e2a\u5168\u5c40\u51fd\u6570\u8868\u91cc\uff0c\u6bcf\u4e2a\u51fd\u6570\u7684\u4fdd\u5b58\u5f62\u5f0f\u5927\u6982\u957f\u8fd9\u6837\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250409-232626-4.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250409-232626-4.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\uff0c\u6bcf\u4e2a\u51fd\u6570\u6211\u4fdd\u5b58\u4e86\u65b9\u6cd5\u540d\u3001\u53c2\u6570\u3001\u6587\u4ef6\u8def\u5f84\u7b49\u7b49\uff0c\u5176\u4e2d\u8fd9\u4e2a$func_stmt\u5176\u5b9e\u5c31\u662f\u6bcf\u4e2a\u51fd\u6570\u7684\u58f0\u660e\uff0c\u4e0d\u8fc7\u4e0d\u662fQ_IR\u5f62\u5f0f\uff0c\u662fphp_parser\u89e3\u6790\u51fa\u6765\u7684AST\uff0c\u5728\u5168\u5c40\u51fd\u6570\u8868\u91cc\u6bcf\u4e2a\u51fd\u6570\u5bf9\u5e94\u7684\u952e\u662fmd5\u540e\u7684\u51fd\u6570\u540d\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250409-233242-5.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250409-233242-5.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p>\u4fdd\u5b58\u5b8c\u6240\u6709\u51fd\u6570\u4e4b\u540e\uff0c\u4f1a\u8fdb\u884c\u5185\u90e8\u7684\u4f20\u64ad\uff0c\u8fd9\u91cc\u7684\u5904\u7406\u903b\u8f91\u548c\u4e4b\u524d\u5176\u5b9e\u633a\u7c7b\u4f3c\u7684\uff0c\u5c31\u662f\u9996\u5148\u628a\u6240\u6709\u53c2\u6570\u5f53\u4f5c\u6c61\u70b9\uff0c\u7136\u540e\u628a\u58f0\u660e\u8f6c\u4e3aQ_IR\u7136\u540e\u6162\u6162\u4f20\u64ad\uff0c\u4e0d\u8fc7\u4e0d\u540c\u7684\u5730\u65b9\u51fa\u73b0\u5728\u8fd9\u91cc\uff0c\u5728\u4e4b\u524d\u5982\u679c\u6211\u4eec\u9047\u5230\u4e86\u4e0d\u5728sink\u91cc\u7684\u81ea\u5b9a\u4e49\u51fd\u6570\uff0c\u5176\u5b9e\u662f\u5904\u7406\u4e0d\u4e86\u7684\uff0c\u9ed8\u8ba4\u89c6\u4f5c\u4e0d\u662fsink\u51fd\u6570\uff0c\u800c\u73b0\u5728\u5982\u679c\u6211\u4eec\u5728\u4f20\u64ad\u8fc7\u7a0b\u4e2d\u9047\u5230\u4e86\u4e00\u4e2a\u7528\u6237\u81ea\u5b9a\u4e49\u51fd\u6570\uff0c\u6211\u4eec\u5c31\u4f1a\u53bb\u51fd\u6570\u8868\u91cc\u627e\u8fd9\u4e2a\u51fd\u6570\u7684sink\u6807\u8bb0flag\uff0c\u770b\u770b\u4ed6\u662ftrue\u8fd8\u662ffalse\uff0c\u5982\u679c\u662fnull\u7684\u8bdd\u8bf4\u660e\u8fd9\u4e2a\u51fd\u6570\u8fd8\u6ca1\u4f20\u64ad\u8fc7\uff0c\u5c31\u5bf9\u8fd9\u4e2a\u51fd\u6570\u5148\u8fdb\u884c\u4e00\u6b21\u4f20\u64ad\uff0c\u7ed9\u8fd9\u4e2a\u51fd\u6570\u6253\u4e0a\u6807\u8bb0\u518d\u6765\u770b\u662f\u4e0d\u662fsink\u3002<\/p>\n\n\n\n<p>\u8fd9\u91cc\u7ec6\u5fc3\u7684\u5c0f\u670b\u53cb\u80af\u5b9a\u4f1a\u53d1\u73b0\u4e00\u4e2a\u95ee\u9898\uff0c\u6309\u7740\u8fd9\u4e2a\u903b\u8f91\u6765\u662f\u4e0d\u662f\u53ef\u80fd\u4f1a\u6210\u73af\u5440\ud83e\udd14\uff0c\u6bd4\u5982\u4e00\u4e2a\u9012\u5f52\u51fd\u6570a\uff0c\u4ed6\u8981\u662fa\u91cc\u8c03\u7528\u4e86a\uff0c\u90a3\u4f60\u5c82\u4e0d\u662f\u4f1a\u65e0\u9650\u6b7b\u5faa\u73af\u4e86\uff0c\u8fd9\u91cc\u4f60\u53ef\u80fd\u4f1a\u60f3\u5230\uff0c\u90a3\u6211\u68c0\u6d4b\u4e00\u4e0b\u4ed6\u662f\u4e0d\u662f\u8c03\u7528\u4e86\u81ea\u5df1\u5c31\u884c\u4e86\uff0c\u8fd9\u786e\u5b9e\u662f\u4e00\u79cd\u5904\u7406\u65b9\u5f0f\uff0c\u4f46\u5982\u679c\u662fa\u91cc\u8c03\u7528\u4e86b\uff0cb\u91cc\u8c03\u7528\u4e86c\uff0cc\u91cc\u53c8\u8c03\u7528\u4e86a\uff0c\u8fd9\u6837\u7684\u73af\uff0c\u4f60\u8be5\u600e\u4e48\u68c0\u9a8c\u5462\uff1f<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250410-000005-6.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250410-000005-6.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:484px;height:auto\"\/><\/div><\/figure>\n\n\n\n<p>\u8fd9\u91cc\u6211\u5176\u5b9e\u4e4b\u524d\u4e5f\u6ca1\u4ec0\u4e48\u597d\u7684\u60f3\u6cd5\uff0c\u6070\u597d\u56e0\u4e3a\u8003\u7814\u590d\u8bd5\u6709\u673a\u8003\uff0c\u7cfb\u7edf\u7684\u5b66\u4e60\u4e86\u4e00\u4e0b\u7b97\u6cd5\uff0c\u628a\u4ee3\u7801\u968f\u60f3\u5f55\u5237\u5b8c\u4e86\uff0c\u53ea\u80fd\u8bf4\u638c\u63e1\u4e00\u70b9\u57fa\u7840\u7684\u7b97\u6cd5\u5bf9\u4e8e\u5f00\u53d1\u8fd8\u662f\u5f88\u6709\u5fc5\u8981\u7684\uff0c\u4ece\u4ee3\u7801\u968f\u60f3\u5f55\u91cc\u6211\u5077\u5230\u7684\u601d\u8def\u5c31\u662f\u518d\u65b0\u589e\u4e00\u4e2a\u6807\u8bb0\u5c31\u884c\u4e86\uff0c\u6bcf\u4e2a\u51fd\u6570\u5982\u679c\u5df2\u7ecf\u5f00\u59cb\u4f20\u64ad\u4e86\uff0c\u5c31\u628a\u4ed6\u4eec\u7684flag\u4ecenull\u6539\u4e3ain\uff0c\u8868\u793a\u6b63\u5728\u4f20\u64ad\uff0c\u8fd9\u6837\u7684\u8bdd\uff0c\u5982\u679c\u6211\u4eec\u60f3\u8981\u8c03\u7528\u4e00\u4e2a\u5df2\u7ecf\u662fin\u72b6\u6001\u7684\u51fd\u6570\uff0c\u5c31\u8bf4\u660e\u73b0\u5728\u5df2\u7ecf\u6210\u73af\u4e86\uff0c\u76f4\u63a5\u76f4\u63a5\u5c06\u5176\u89c6\u4f5c\u975esink\u5373\u53ef\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250410-000922-7.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250410-000922-7.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:520px;height:auto\"\/><\/div><\/figure>\n\n\n\n<p>\u8fd9\u6837\u6211\u4eec\u5c31\u80fd\u7528\u4e00\u4e2a\u975e\u5e38\u4f18\u96c5\u7684\u65b9\u5f0f\u9632\u6b62\u6210\u73af\uff0c\u5e76\u4e14\u6210\u529f\u7684\u5bf9\u6240\u6709\u51fd\u6570\u6253\u4e0a\u6807\u7b7e\uff0c\u6bd4\u5982\u5bf9\u4e8e\u4e0a\u9762\u90a3\u4e2a\u4f8b\u5b50\uff0c\u6211\u4eec\u73b0\u5728\u4f7f\u7528dirty_func\u529f\u80fd\uff0c\u5c31\u80fd\u6210\u529f\u8bc6\u522b\u8fd9\u79cd\u8de8\u6587\u4ef6\u7684\u51fd\u6570\u8c03\u7528\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250410-001144-8.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250410-001144-8.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p>\u70b9\u51fb\u8df3\u8f6c\u5230\u8c03\u7528\u94fe\uff0c\u6211\u4eec\u5c31\u80fd\u8df3\u8f6c\u8fd9\u4e2a\u51fd\u6570a\u7684\u5177\u4f53\u8c03\u7528\u8fc7\u7a0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250410-001303-9.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250410-001303-9.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p>\u70b9\u51fb\u6bcf\u4e2a\u51fd\u6570\uff0c\u6211\u4eec\u4e5f\u80fd\u770b\u5230\u6bcf\u4e2a\u51fd\u6570\u5185\u90e8\u7684\u4f20\u64ad\u8def\u5f84\uff0c\u6bd4\u5982\u8fd9\u4e2aa\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250410-001433-10.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250410-001433-10.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p>\u5728\u9875\u9762\u7684\u6700\u4e0b\u65b9\uff0c\u6709\u672c\u6b21\u626b\u63cf\u5f97\u5230\u7684\u6240\u6709sink\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250410-001531-11.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250410-001531-11.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p>\u6211\u5df2\u7ecf\u8d34\u5fc3\u7684\u6309\u7167\u683c\u5f0f\u8f93\u51fa\u597d\u4e86\uff0c\u4f60\u53ea\u9700\u8981\u590d\u5236\u4e86\u4e4b\u540e\u52a0\u5230Sink.php\u91cc\u5c31\u884c\u4e86\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250410-001643-12.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250410-001643-12.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:519px;height:auto\"\/><\/div><\/figure>\n\n\n\n<p>\u73b0\u5728\u518d\u4f7f\u7528\u6587\u4ef6\u5206\u6790\u529f\u80fd\uff0c\u6211\u4eec\u5c31\u80fd\u8bc6\u522b\u5230\u8fd9\u4e2a\u65b0\u6f0f\u6d1e\u4e86\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250410-005313-25.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250410-005313-25.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FC8E18D465DDC8C85E1D27E029449062D.gif'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FC8E18D465DDC8C85E1D27E029449062D.gif\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:231px;height:auto\"\/><\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u6d4b\u8bd5\u7528\u4f8b<\/h2>\n\n\n\n<p>TestProject\u91cc\u662f\u6211\u5f00\u53d1\u7684\u65f6\u5019\u7528\u7684\u4e00\u4e9b\u6d4b\u8bd5\u7528\u4f8b\uff0c\u5176\u4e2dASTmainForTest.php\u548cDirtyFuncTest.php\u4e5f\u90fd\u662f\u6211\u81ea\u5df1\u5f00\u53d1\u7684\u65f6\u5019\u7528\u7684\uff0c\u6bd4\u5982ASTmainForTest.php\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F20.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F20.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\u5b83\u8bfb\u53d6\u4e86test.php\u5185\u5bb9\u7136\u540e\u505a\u89e3\u6790\uff0c\u4e0b\u9762var_dump\u90a3\u91cc\u6ce8\u91ca\u4e86\u5f88\u591a\u4e1c\u897f\uff0c\u5c31\u662f\u6211\u81ea\u5df1\u5f00\u53d1\u7684\u65f6\u5019\u6d4b\u4ee3\u7801\u7528\u7684\uff0c\u53ef\u4ee5\u6253\u5370AST\u3001\u65b9\u6cd5\u8868\u5565\u7684\uff0c\u60f3\u4e8c\u5f00\u4e0d\u77e5\u9053\u600e\u4e48\u5f04\u7684\u4e5f\u53ef\u4ee5\u7528\u8fd9\u4e2a\u5148\u770b\u770b\u6211\u524d\u9762\u662f\u600e\u4e48\u89e3\u6790\u4ee3\u7801\u7684\uff0c\u4e0b\u9762\u7528\u7684\u4e00\u4e9b\u6d4b\u8bd5\u7528\u4f8b\u5728TestProject\u91cc\u4e5f\u90fd\u6709\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5206\u652f\u8bed\u53e5\u6d4b\u8bd5<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u5b58\u5728\u9ed8\u8ba4\u5206\u652f\u7684\u60c5\u51b5<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n$age = $_POST&#91;1];\nif ($age &lt; 18) {\n    system($age);\n} elseif ($age == 18) {\n    $age = 1;\n    echo $age;\n} elseif ($age == 19) {\n    eval($age);\n} else {\n    echo $age;\n}\n<\/code><\/pre>\n\n\n\n<p>\u8be5\u4ee3\u7801\u5b58\u5728\u9ed8\u8ba4\u5206\u652felse\uff0c\u56e0\u6b64\u4e0d\u5b58\u5728\u4e00\u6761\u76f4\u63a5\u8df3\u8fc7if\u8bed\u53e5\u7684\u5206\u652f\uff0c\u5176\u4ee3\u7801\u626b\u63cf\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F21.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F21.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p>\u672c\u9879\u76ee\u51c6\u786e\u7684\u8bc6\u522b\u4e86\u8fd9\u56db\u6761\u5206\u652f\uff0c\u5e76\u8f93\u51fa\u4e86\u5b58\u5728\u6f0f\u6d1e\u7684\u4e09\u79cd\u60c5\u51b5\uff0c\u7b2c\u4e00\u79cd\u60c5\u51b5\u4fbf\u662f\u76f4\u63a5\u4ece\u7b2c\u4e00\u4e2aif\u8bed\u53e5\u8fdb\u5165\uff0c\u70b9\u51fbDetails\uff0c\u5176\u8be6\u60c5\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F22.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F22.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:704px;height:auto\"\/><\/div><\/figure>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\u672c\u9879\u76ee\u51c6\u786e\u7684\u8bc6\u522b\u5230\u4e86\u8fd9\u6761\u5b58\u5728\u6f0f\u6d1e\u7684\u5206\u652f\uff0c\u5e76\u7528\u6a59\u8272\u6807\u8bb0\u4e86\u6c61\u70b9\u4f20\u64ad\u8def\u5f84\uff0c\u7ea2\u8272\u6807\u8bb0\u4e86Sink\u89e6\u53d1\u70b9\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e8c\u6761\u5206\u652f\u867d\u7136\u5b58\u5728Sink\u70b9echo\uff0c\u4f46\u7531\u4e8e\u5728Sink\u70b9\u7684\u524d\u4e00\u884c\u4ee3\u7801\u5c06$age\u91cd\u65b0\u8d4b\u503c\u4e3a\u4e861\uff0c\u56e0\u6b64$age\u4e0d\u518d\u662f\u6c61\u70b9\uff0c\u9879\u76ee\u5e76\u672a\u8f93\u51fa\u8fd9\u6761\u5206\u652f\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e09\u6761\u5206\u652f\u76f4\u63a5\u8fdb\u5165eval\uff0c\u5b58\u5728\u6f0f\u6d1e\u70b9\uff0c\u5176\u8be6\u60c5\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F23.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F23.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:702px;height:auto\"\/><\/div><\/figure>\n\n\n\n<p>\u7b2c\u56db\u6761\u5206\u652f\u76f4\u63a5echo\u4e86$a\uff0c\u540c\u6837\u5b58\u5728\u6f0f\u6d1e\uff0c\u5176\u8be6\u60c5\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F24.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F24.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u4e0d\u5b58\u5728\u9ed8\u8ba4\u5206\u652f\u7684\u60c5\u51b5<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n$age = $_POST&#91;1];\nif ($age &lt; 18) {\n    $age = $age . \"1\";\n} elseif ($age == 18) {\n    $age = 1;\n}\nsystem($age);\n<\/code><\/pre>\n\n\n\n<p>\u8be5\u4ee3\u7801\u4e00\u5171\u5b58\u5728\u4e09\u6761\u5206\u652f\uff0c\u5206\u522b\u662f\u7b2c\u4e00\u4e2aif\uff0c\u7b2c\u4e8c\u4e2aelseif\uff0c\u4ee5\u53ca\u7531\u4e8e\u4e0d\u5b58\u5728else\u8fd9\u7c7b\u9ed8\u8ba4\u5206\u652f\u5b58\u5728\u7684\u4e0d\u7ecf\u8fc7if\u7684\u76f4\u901a\u8def\u5f84\uff0c\u5176\u626b\u63cf\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F25.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F25.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p>\u6210\u529f\u8bc6\u522b\u4e86\u5b58\u5728\u6f0f\u6d1e\u7684\u4e24\u6761\u5206\u652f\uff0c\u5bf9\u4e8e\u7b2c\u4e00\u6761\u5206\u652f\u4ee3\u7801\u8be6\u60c5\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F26.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F26.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p>\u5728\u672c\u6761\u5206\u652f\u4e2d\uff0c\u51fa\u73b0\u4e86$age = $age . &#8220;1&#8221;\u8fd9\u7c7b\u62fc\u63a5\u8868\u8fbe\uff0c\u867d\u7136\u6570\u5b571\u5e76\u4e0d\u662f\u6c61\u70b9\uff0c\u4f46$age\u662f\u6c61\u70b9\uff0c\u5bf9\u4e8e\u8868\u8fbe\u5f0f\u800c\u8a00\uff0c\u53ea\u8981\u5176\u4e2d\u5b58\u5728\u4e00\u4e2a\u88ab\u6c61\u67d3\u7684\u53d8\u91cf\uff0c\u6574\u4e2a\u8868\u8fbe\u5f0f\u5c31\u8ba4\u4e3a\u88ab\u6c61\u67d3\u4e86\uff0c\u56e0\u6b64\u6b64\u65f6\u7684$age\u4ecd\u7136\u5c5e\u4e8e\u6c61\u70b9\uff0c\u6d41\u5165\u4e86\u4e0b\u9762\u7684Sink\u70b9system\u4e2d\u3002<\/p>\n\n\n\n<p>\u800c\u7b2c\u4e8c\u6761\u5206\u652f\u4e2d\uff0c\u53d8\u91cf$age\u88ab\u91cd\u65b0\u8d4b\u503c\u4e3a\u4e861\uff0c\u6c61\u70b9\u7684\u4f20\u64ad\u88ab\u622a\u65ad\uff0c\u56e0\u6b64\u4e0d\u518d\u4f5c\u4e3a\u6c61\u70b9\uff0c\u4e0d\u5b58\u5728\u4eceSource\u5230Sink\u7684\u5371\u9669\u8def\u5f84\u3002\u7b2c\u4e09\u6761\u5206\u652f\uff0c\u5373\u4e0d\u7ecf\u8fc7if\u8bed\u53e5\u7684\u76f4\u901a\u8def\u5f84\u626b\u63cf\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F27.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F27.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p>\u7531\u4e8eif\u4e0d\u5b58\u5728else\u8fd9\u7c7b\u9ed8\u8ba4\u5206\u652f\uff0c\u56e0\u6b64\u6c61\u70b9\u7684\u4f20\u64ad\u53ef\u4ee5\u4e0d\u7ecf\u8fc7if\u8bed\u53e5\u76f4\u63a5\u6d41\u52a8\uff0c\u6240\u4ee5\u8fd9\u91cc\u8fd8\u5b58\u5728\u4e00\u6761\u4ece$age\u76f4\u63a5\u5230\u8fbesystem\u7684\u8def\u5f84\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6c61\u70b9\u622a\u65ad\u6d4b\u8bd5<\/h3>\n\n\n\n<p>\u9996\u5148\u6211\u4eec\u5728Sanitizer\u4e2d\u52a0\u5165PHP\u4e2d\u5185\u7f6e\u7684\u8fc7\u6ee4\u51fd\u6570addslashes\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F28.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F28.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n\n$a = $_POST&#91;1];\n\/\/trim\u662ftransfer\n$processed_a = trim($a);\n\/\/addslashes\u4e0d\u662ftransfer\uff0c\u662fsanitizer\uff0c\u622a\u65ad\u6c61\u70b9\u4f20\u64ad\n$processed_b = addslashes($a);\n\nsystem($processed_a);\nsystem($processed_b);\n<\/code><\/pre>\n\n\n\n<p>\u5728\u8be5\u4ee3\u7801\u793a\u4f8b\u4e2d\uff0ctrim\u51fd\u6570\u662fPHP\u4e2d\u5185\u7f6e\u7684\u53ef\u4ee5\u53bb\u9664\u5b57\u7b26\u4e32\u4e24\u8fb9\u7a7a\u683c\u7684\u51fd\u6570\uff0c\u662f\u4e0d\u4f1a\u5f71\u54cd\u6c61\u70b9\u4f20\u64ad\u7684\u5b89\u5168\u51fd\u6570\uff0c\u800caddslashes\u51fd\u6570\u4f1a\u5728\u6307\u5b9a\u7684\u9884\u5b9a\u4e49\u5b57\u7b26\u524d\u6dfb\u52a0\u53cd\u659c\u6760\uff0c\u6bd4\u5982\u5355\u5f15\u53f7\uff08&#8221;\uff09\u3001\u53cc\u5f15\u53f7\uff08\u201c\u201d\uff09\u3001\u53cd\u659c\u7ebf\uff08\\\\\uff09\u4e0eNUL\uff08NULL\u5b57\u7b26\uff09\u7b49\uff0c\u662fPHP\u4e2d\u5185\u7f6e\u7684\u8fc7\u6ee4\u51fd\u6570\uff0c\u6c61\u70b9\u6d41\u5728\u7ecf\u8fc7\u5b83\u540e\u4f1a\u5931\u53bb\u5371\u5bb3\uff0c\u4ee3\u7801\u7684\u626b\u63cf\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F29.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F29.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p>\u9879\u76ee\u6210\u529f\u8bc6\u522b\u51fa\u5b58\u5728\u5371\u5bb3\u7684\u90a3\u6761\u7ecf\u8fc7trim\u51fd\u6570\u7684\u5206\u652f\uff0c\u5e76\u6ca1\u6709\u8f93\u51fa\u7ecf\u8fc7addslashes\u51fd\u6570\u7684\u5206\u652f\uff0c\u4ee3\u7801\u8be6\u60c5\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F30.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F30.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:643px;height:auto\"\/><\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u7528\u6237\u81ea\u5b9a\u4e49\u51fd\u6570\u6d4b\u8bd5(v1.0~v1.1\u7684\u601d\u8def\uff0cv1.2\u4e2d\u5df2\u7ecf\u5e9f\u5f03)<\/h3>\n\n\n\n<p>Once again\uff0c\u626b\u5927\u9879\u76ee\u7684\u65f6\u5019\u4e0d\u8981\u52a0\u90a3\u53e5\u89e3\u6790\u51fd\u6570\u8868\u7684\u4ee3\u7801\uff0c\u4f46\u5982\u679c\u662f\u5355\u6587\u4ef6\u7684\u8bdd\u5012\u662f\u65e0\u6240\u8c13\uff0c\u8fd9\u91cc\u6765\u6d4b\u8bd5\u4e00\u4e0b\u5355\u6587\u4ef6\uff0c\u6211\u4eec\u628a\u90a3\u53e5\u4ee3\u7801\u52a0\u56de\u6765\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F31.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F31.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n\nfunction test($a)\n{\n    eval($a);\n}\n\n$s = $_GET&#91;'fushuling'];\n\ntest($s);\n<\/code><\/pre>\n\n\n\n<p>\u5176\u4e2dtest\u51fd\u6570\u662f\u4e00\u4e2a\u7528\u6237\u81ea\u5b9a\u4e49\u51fd\u6570\uff0c\u63a5\u6536\u53c2\u6570$a\uff0c\u5e76\u5728\u5177\u4f53\u8bed\u53e5\u4e2d\u4f7f\u7528PHP\u4e2d\u53ef\u4ee5\u76f4\u63a5\u6267\u884c\u4ee3\u7801\u7684\u5371\u9669\u51fd\u6570eval\u51fd\u6570\u76f4\u63a5\u6267\u884c\u4e86\u53c2\u6570$a\u7684\u503c\uff0c\u5c5e\u4e8e\u5178\u578b\u7684\u5371\u9669\u51fd\u6570\uff0c\u5176\u626b\u63cf\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F32.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F32.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p>\u4ee3\u7801\u8be6\u60c5\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F33.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F33.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u771f\u5b9e\u9879\u76ee\u6d4b\u8bd5<\/h3>\n\n\n\n<p>\u8fd9\u91cc\u7528\u7684\u9879\u76ee\u662fSeaCMS_12.9\u7684\u4ee3\u7801\uff0c<strong>\u5df2\u7ecf\u4e0d\u662f\u6700\u65b0\u7248\u672c\u4e86<\/strong>\uff0c\u800c\u4e14\u4e5f\u4fee\u7684\u5dee\u4e0d\u591a\u4e86\uff0c\u4e4b\u524d\u62ff\u8fd9\u4e2a\u626b\u4e86\u4e00\u4e9b\u6ca1\u4ec0\u4e48\u542b\u91d1\u91cf\u7684\u6d1e\uff0c\u8fd9\u91cc\u4ec5\u4f5c\u4e3a\u6d4b\u8bd5\u6837\u4f8b<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">RCE(v1.1+\u8017\u65f6\u5df2\u7ecf\u964d\u4f4e\u5230\u539f\u672c\u76841\/3)<\/h4>\n\n\n\n<p>\u8fd9\u91cc\u6211\u4eec\u4f7f\u7528\u6587\u4ef6\u5206\u6790\u529f\u80fd<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper 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data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F36.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F36.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" 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src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F37.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\u7531\u4e8e\u8fd9\u4e9b\u53c2\u6570\u53ef\u63a7\uff0c\u6240\u4ee5\u6211\u4eec\u53ea\u9700\u8981\u95ed\u5408\u4e00\u4e0b\u524d\u540e\u7684\u5f15\u53f7\uff0c\u5c31\u53ef\u4ee5\u5411weixin.php\u8fd9\u4e2a\u6587\u4ef6\u4e2d\u5199\u5165\u4efb\u610f\u4ee3\u7801\uff0c\u5b58\u5728\u4e25\u91cd\u7684\u4ee3\u7801\u6ce8\u5165\u98ce\u9669\uff0c\u63a5\u7740\u6211\u4eec\u8bbf\u95eeweixin.php\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image 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alt=\"\"\/><\/div><\/figure>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\u8be5\u9875\u9762\u6210\u529f\u6267\u884c\u4e86\u6211\u4eec\u7684\u4ee3\u7801system(&#8220;whoami&#8221;)\uff0c\u5728\u7f51\u9875\u4e0a\u8f93\u51fa\u4e86\u7528\u6237\u7684\u4fe1\u606f\uff0c\u5b58\u5728\u6781\u5176\u4e25\u91cd\u7684\u5b89\u5168\u98ce\u9669\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">SQL\u6ce8\u5165(v1.0~v1.1\u7684\u601d\u8def\uff0cv1.2\u4e2d\u5df2\u7ecf\u5e9f\u5f03)<\/h4>\n\n\n\n<p>\u8fd9\u91cc\u6211\u4eec\u4f7f\u7528\u51fd\u6570\u626b\u63cf\u529f\u80fd<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F39.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F02%2F18%2F39.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p>\u8fd9\u91cc\u5c31\u7528\u65f619\u79d2\u4e86\uff0c\u6162\u591a\u4e86\uff0c\u56e0\u4e3a\u8fd9\u79cd\u9879\u76ee\u5b9a\u4e49\u7684\u51fd\u6570\u90fd\u591a\uff0c\u800c\u6211\u4eec\u626b\u51fd\u6570\u90fd\u662f\u626b\u4e24\u904d\uff0c\u4e00\u904d\u6709\u6761\u4ef6\uff0c\u4e00\u904d\u65e0\u6761\u4ef6\uff0c\u6240\u4ee5\u901f\u5ea6\u5c31\u6162\u4e0b\u6765\u4e86\uff0c\u6211\u4eec\u6765\u770b\u8fd9\u4e2aNo 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src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250410-003231-17.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:783px;height:auto\"\/><\/div><\/figure>\n\n\n\n<p>\u7136\u540e\u518d\u70b9\u5f00\u8fd9\u4e2a\u7f16\u8f91_\u5f39\u5e55\uff0c\u53ef\u4ee5\u770b\u5230\u51fa\u73b0\u6f0f\u6d1e\u7684\u539f\u56e0\u662f\u56e0\u4e3a\u76f4\u63a5\u62fc\u63a5\u4e86\u8f93\u5165\u6267\u884c\u4e86sql\u8bed\u53e5\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250410-003345-18.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250410-003345-18.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:783px;height:auto\"\/><\/div><\/figure>\n\n\n\n<p>\u63a5\u7740\u628a\u8fd9\u4e9b\u65b0Sink\u590d\u5236\u8fc7\u6765\uff0c\u52a0\u5230Sink.php\u91cc\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' 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href='https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250410-003702-21.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2025%2F04%2FQQ20250410-003702-21.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:743px;height:auto\"\/><\/div><\/figure>\n\n\n\n<p>\u73b0\u5728\u5c31\u53ef\u4ee5\u626b\u63cf\u5230\u56e0\u4e3a\u65b0sink\u5bfc\u81f4\u7684\u6f0f\u6d1e\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' 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