{"id":62091,"date":"2026-01-19T09:34:12","date_gmt":"2026-01-19T01:34:12","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/62091.html"},"modified":"2026-01-19T09:34:12","modified_gmt":"2026-01-19T01:34:12","slug":"%e4%b8%89%e5%88%86%e9%92%9f%e7%9c%8b%e6%87%82-php%e3%80%8c%e8%b7%af%e5%be%84%e8%b7%83%e8%bf%81%e3%80%8d%ef%bc%9a%e7%94%a8%e6%88%b7%e8%be%93%e5%85%a5%e5%a6%82%e4%bd%95%e6%84%8f%e5%a4%96%e8%b5%b0","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/62091.html","title":{"rendered":"\u4e09\u5206\u949f\u770b\u61c2 PHP\u300c\u8def\u5f84\u8dc3\u8fc1\u300d\uff1a\u7528\u6237\u8f93\u5165\u5982\u4f55\u610f\u5916\u8d70\u904d\u670d\u52a1\u5668\u76ee\u5f55\uff1f"},"content":{"rendered":"<h2>\u4e09\u5206\u949f\u770b\u61c2 PHP\u300c\u8def\u5f84\u8dc3\u8fc1\u300d&#xff1a;\u7528\u6237\u8f93\u5165\u5982\u4f55\u610f\u5916\u8d70\u904d\u670d\u52a1\u5668\u76ee\u5f55&#xff1f;<\/h2>\n<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>\u4e09\u5206\u949f\u770b\u61c2 PHP\u300c\u8def\u5f84\u8dc3\u8fc1\u300d&#xff1a;\u7528\u6237\u8f93\u5165\u5982\u4f55\u610f\u5916\u8d70\u904d\u670d\u52a1\u5668\u76ee\u5f55&#xff1f;<\/li>\n<li>\n<ul>\n<li>\u524d\u8a00&#xff1a;<\/li>\n<li>\u4ec0\u4e48\u662f\u8def\u5f84\u8dc3\u8fc1\u6f0f\u6d1e&#xff1f;<\/li>\n<li>\u8def\u5f84\u8dc3\u8fc1\u6f0f\u6d1e\u590d\u73b0\u4e0e\u5206\u6790<\/li>\n<li>\u6f0f\u6d1e\u6761\u4ef6\u7ed5\u8fc7\u4e0e\u4fee\u590d<\/li>\n<li>\n<ul>\n<li>\u6f0f\u6d1e\u7ed5\u8fc7<\/li>\n<li>\u6f0f\u6d1e\u4fee\u590d<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u58f0\u660e&#xff1a;\u672c\u6587\u6240\u6709\u64cd\u4f5c\u5747\u5728\u672c\u5730\u5c01\u95ed\u73af\u5883\u5b8c\u6210&#xff0c;\u672a\u6d89\u53ca\u4efb\u4f55\u771f\u5b9e\u751f\u4ea7\u7cfb\u7edf&#xff1b;\u793a\u4f8b\u4ee3\u7801\u5df2\u505a\u8131\u654f\u4e0e\u8303\u56f4\u9650\u5236&#xff0c;\u4ec5\u4f9b\u5b66\u4e60\u4ea4\u6d41\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260119013408-696d8a1019586.png\" alt=\"\" \/><\/p>\n<h3>\u524d\u8a00&#xff1a;<\/h3>\n<p>\u6b64\u7bc7\u6587\u7ae0\u7684\u4ee5PHP\u8bed\u8a00\u6765\u4f5c\u4e3a\u57fa\u7840\u73af\u5883\u9488\u5bf9\u4e8ePHP\u6587\u4ef6\u76ee\u5f55\u7a7f\u8d8a\u6f0f\u6d1e\u8bfb\u53d6\u8fdb\u884c\u7814\u7a76\u5e76\u603b\u7ed3\u3002<\/p>\n<h3>\u4ec0\u4e48\u662f\u8def\u5f84\u8dc3\u8fc1\u6f0f\u6d1e&#xff1f;<\/h3>\n<p>\u76ee\u5f55\u7a7f\u8d8a\u6f0f\u6d1e&#xff08;Directory Traversal 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class=\"token operator\">&lt;<\/span><span class=\"token operator\">!<\/span><span class=\"token constant\">DOCTYPE<\/span> html<span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token operator\">&lt;<\/span>html<span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token operator\">&lt;<\/span>head<span class=\"token operator\">&gt;<\/span><br \/>\n    <span class=\"token operator\">&lt;<\/span>meta charset<span class=\"token operator\">&#061;<\/span><span class=\"token string double-quoted-string\">&#034;utf-8&#034;<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n    <span class=\"token operator\">&lt;<\/span>title<span class=\"token operator\">&gt;<\/span>\u6587\u4ef6\u5217\u8868<span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>title<span class=\"token operator\">&gt;<\/span><br \/>\n    <span class=\"token operator\">&lt;<\/span>link rel<span class=\"token operator\">&#061;<\/span><span class=\"token string double-quoted-string\">&#034;stylesheet&#034;<\/span> href<span class=\"token operator\">&#061;<\/span><span class=\"token string double-quoted-string\">&#034;https:\/\/maxcdn.bootstrapcdn.com\/font-awesome\/4.7.0\/css\/font-awesome.min.css&#034;<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n    <span class=\"token operator\">&lt;<\/span>style type<span class=\"token operator\">&#061;<\/span><span class=\"token string double-quoted-string\">&#034;text\/css&#034;<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n        ul <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">list<\/span><span class=\"token operator\">&#8211;<\/span>style<span class=\"token punctuation\">:<\/span> none<span class=\"token punctuation\">;<\/span><br \/>\n            padding<span class=\"token punctuation\">:<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            margin<span class=\"token punctuation\">:<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        li <span class=\"token punctuation\">{<\/span><br \/>\n            margin<span class=\"token operator\">&#8211;<\/span>bottom<span class=\"token punctuation\">:<\/span> <span class=\"token number\">10<\/span>px<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        i <span class=\"token punctuation\">{<\/span><br \/>\n            margin<span class=\"token operator\">&#8211;<\/span>right<span class=\"token punctuation\">:<\/span> <span class=\"token number\">10<\/span>px<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        a <span class=\"token punctuation\">{<\/span><br \/>\n            text<span class=\"token operator\">&#8211;<\/span>decoration<span class=\"token punctuation\">:<\/span> none<span class=\"token punctuation\">;<\/span><br \/>\n            color<span class=\"token punctuation\">:<\/span> <span class=\"token comment\">#333;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>style<span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>head<span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token operator\">&lt;<\/span>body<span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token operator\">&lt;<\/span>h1<span class=\"token operator\">&gt;<\/span>\u5f53\u524d\u76ee\u5f55\u4e0b\u7684\u6587\u4ef6\u5217\u8868<span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>h1<span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token operator\">&lt;<\/span>ul<span class=\"token operator\">&gt;<\/span><\/p>\n<p><span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>ul<span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>body<span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>html<span class=\"token operator\">&gt;<\/span><\/p>\n<p><span class=\"token operator\">&lt;<\/span><span class=\"token operator\">?<\/span>php<br \/>\n<span class=\"token comment\">\/\/\u83b7\u53d6 URL \u53c2\u6570 path&#xff0c;\u5982\u679c\u6ca1\u6709\u63d0\u4f9b\u5c31\u9ed8\u8ba4\u4e3a\u5f53\u524d\u76ee\u5f55 .\/\u3002<\/span><br \/>\n<span class=\"token variable\">$dir<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token variable\">$_GET<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string single-quoted-string\">&#039;path&#039;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">??<\/span> <span class=\"token string single-quoted-string\">&#039;.\/&#039;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/1.\u6253\u5f00\u76ee\u5f55&#xff0c;\u8bfb\u53d6\u6587\u4ef6\u5217\u8868 opendir<\/span><br \/>\n<span class=\"token comment\">\/\/2.\u5faa\u73af\u8bfb\u53d6\u6587\u4ef6\u5217\u8868 while readdir<\/span><br \/>\n<span class=\"token comment\">\/\/3.\u5224\u65ad\u662f\u6587\u4ef6\u8fd8\u662f\u6587\u4ef6\u5939 is_dir<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u6784\u5efa\u51fd\u6570&#xff1a;\u6253\u5f00\u76ee\u5f55&#xff0c;\u5faa\u73af\u8bfb\u53d6\u76ee\u5f55\u4e0b\u7684\u6587\u4ef6\u548c\u5b50\u76ee\u5f55<\/span><br \/>\n<span class=\"token keyword\">function<\/span> <span class=\"token function-definition function\">filelist<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$dir<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$dh<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">opendir<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$dir<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/\u5faa\u73af\u8bfb\u53d6\u6587\u4ef6\u5217\u8868 while readdir<\/span><br \/>\n        <span class=\"token keyword\">while<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$file<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token function\">readdir<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$dh<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">)<\/span><span class=\"token operator\">!&#061;&#061;<\/span> <span class=\"token constant boolean\">false<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token comment\">\/\/\u5224\u65ad\u662f\u6587\u4ef6\u8fd8\u662f\u6587\u4ef6\u5939 is_dir<\/span><br \/>\n            <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">is_dir<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$file<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token keyword\">echo<\/span> <span class=\"token string double-quoted-string\">&#034;&lt;li&gt;&lt;i class&#061;&#039;fa fa-folder&#039;&gt;&lt;\/i&gt; &lt;a href&#061;&#039;?path&#061;<span class=\"token interpolation\"><span class=\"token variable\">$file<\/span><\/span>&#039;&gt;&#034;<\/span> <span class=\"token operator\">.<\/span> <span class=\"token variable\">$file<\/span> <span class=\"token operator\">.<\/span> <span class=\"token string single-quoted-string\">&#039;&lt;\/a&gt;&lt;\/li&gt;&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><span class=\"token keyword\">else<\/span><span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token keyword\">echo<\/span> <span class=\"token string single-quoted-string\">&#039;&lt;li&gt;&lt;i class&#061;&#034;fa fa-file&#034;&gt;&lt;\/i&gt; &lt;a href&#061;&#034;#&#034;&gt;&#039;<\/span> <span class=\"token operator\">.<\/span> <span class=\"token variable\">$file<\/span> <span class=\"token operator\">.<\/span> <span class=\"token string single-quoted-string\">&#039;&lt;\/a&gt;&lt;\/li&gt;&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token comment\">\/\/ \u8c03\u7528\u51fd\u6570\u5217\u51fa\u76ee\u5f55\u5185\u5bb9\u3002<\/span><br \/>\n<span class=\"token function\">filelist<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$dir<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/del($file) \u51fd\u6570&#xff1a;\u5220\u9664\u6307\u5b9a\u6587\u4ef6<\/span><br \/>\n<span class=\"token keyword\">function<\/span> <span class=\"token function-definition function\">del<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$file<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token function\">is_dir<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$file<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">unlink<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$file<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">echo<\/span> <span class=\"token string double-quoted-string\">&#034;&lt;script&gt;alert(&#039;\u5220\u9664\u6210\u529f&#039;)&lt;\/script&gt;&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">isset<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$_GET<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string single-quoted-string\">&#039;del&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">del<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$_GET<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string single-quoted-string\">&#039;del&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/down($filepath) \u51fd\u6570&#xff1a;\u4e0b\u8f7d\u6307\u5b9a\u6587\u4ef6<\/span><br \/>\n<span class=\"token keyword\">function<\/span> <span class=\"token function-definition function\">down<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$filepath<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token variable\">$fileName<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">basename<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$filepath<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">header<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string double-quoted-string\">&#034;Content-Type: application\/octet-stream&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">header<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string double-quoted-string\">&#034;Content-Disposition: attachment; filename&#061;\\\\&#034;&#034;<\/span> <span class=\"token operator\">.<\/span> <span class=\"token variable\">$fileName<\/span> <span class=\"token operator\">.<\/span> <span class=\"token string double-quoted-string\">&#034;\\\\&#034;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">header<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string double-quoted-string\">&#034;Content-Length: &#034;<\/span> <span class=\"token operator\">.<\/span> <span class=\"token function\">filesize<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$filepath<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">readfile<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$filepath<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">isset<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$_GET<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string single-quoted-string\">&#039;down&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">down<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$_GET<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string single-quoted-string\">&#039;down&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token operator\">?<\/span><span class=\"token operator\">&gt;<\/span><\/p>\n<p>\u5206\u6790\u4e0a\u9762\u4ee3\u7801&#xff0c;\u6211\u4eec\u53d1\u73b0\u4ee3\u7801\u4e2d\u7531\u4e8e\u5f00\u53d1\u7684\u903b\u8f91\u5b58\u5728\u7740\u76ee\u5f55\u7a7f\u8d8a\u6f0f\u6d1e&#xff1a;\u7528\u6237\u53ef\u4ee5\u8bbf\u95ee\u670d\u52a1\u5668\u4e0a\u4efb\u610f\u76ee\u5f55\u548c\u6587\u4ef6\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\u6211\u4eec\u6765\u4e00\u6b65\u4e00\u6b65\u8ddf\u8fdb\u590d\u73b0\u6f0f\u6d1e\u4e0e\u603b\u7ed3\u539f\u7406&#xff0c;\u901a\u8fc7web\u8bbf\u95ee\u9875\u9762\u53ef\u4ee5\u5f97\u77e5\u80fd\u8bfb\u53d6\u6211\u4eec\u5f53\u524d\u4ee3\u7801\u6240\u5728\u76ee\u5f55\u7684\u6240\u6709\u6587\u4ef6\u53ca\u6587\u4ef6\u5939\u5e76\u4e14\u53ef\u4ee5\u901a\u8fc7\u70b9\u51fb\u6309\u94ae\u8fdb\u884c\u8df3\u8f6c\u5982\u4e0b\u56fe\u6240\u793a<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260119013408-696d8a1068516.png\" alt=\"\" \/><\/p>\n<p>\u901a\u8fc7\u5206\u6790\u4ee3\u7801&#xff0c;\u6211\u4eec\u53ef\u4ee5\u5f97\u77e5\u8fd9\u662f\u901a\u8fc7path\u8fdb\u884c\u4f20\u53c2\u6765\u628a\u9700\u8981\u8bfb\u53d6\u7684\u76ee\u5f55\u53c2\u6570\u4f20\u9012\u8fdb\u53bb\u901a\u8fc7\u8c03\u7528\u6587\u4ef6\u5217\u8868\u51fd\u6570\u8fdb\u884c\u8bfb\u53d6\u5e76\u663e\u793a\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260119013408-696d8a10aa42b.png\" alt=\"\" \/><\/p>\n<p>\u6211\u4eec\u4ee3\u7801\u5f53\u524d\u6240\u5904\u5728D:\\\\PhpstormProjects\\\\Basic PHP\u76ee\u5f55\u4e2d&#xff0c;\u6240\u4ee5\u6211\u4eecweb\u9875\u9762\u5c31\u81ea\u7136\u7684\u663e\u793a\u5f53\u524d\u76ee\u5f55\u4e0b\u7684\u6240\u6709\u6587\u4ef6<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260119013408-696d8a10ea300.png\" alt=\"\" \/><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260119013409-696d8a11268ee.png\" alt=\"\" \/><\/p>\n<p>\u4e8e\u662f\u6211\u4eec\u901a\u8fc7path\u4f20\u9012\u53c2\u6570&#034;\u2026\/&#034;\u770b\u662f\u5426\u80fd\u8bfb\u53d6\u4e0a\u4e00\u7ea7\u76ee\u5f55<\/p>\n<p>http:\/\/localhost:63342\/PhpstormProjects\/Basic%20PHP\/file-manage1.php?path&#061;..\/<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260119013409-696d8a1164fd0.png\" alt=\"\" \/><\/p>\n<p>\u53ef\u4ee5\u770b\u5230\u6210\u529f\u8bfb\u53d6\u4e0a\u4e00\u7ea7\u7684\u76ee\u5f55&#xff0c;\u4e8e\u662f\u6211\u4eec\u7ee7\u7eed\u5957\u7528\u9012\u5f52\u2026\/\u8bfb\u53d6\u4e0a\u4e00\u7ea7\u76ee\u5f55<\/p>\n<p>http:\/\/localhost:63342\/PhpstormProjects\/Basic%20PHP\/file-manage1.php?path&#061;..\/..\/<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260119013409-696d8a11a51ee.png\" alt=\"\" \/><\/p>\n<p>\u53ef\u4ee5\u53d1\u73b0\u4f9d\u65e7\u53ef\u4ee5\u8bfb\u53d6\u4e0a\u4e00\u7ea7\u76ee\u5f55&#xff0c;\u90a3\u4e48\u6211\u4eec\u5c31\u53d1\u73b0\u4e86\u53ef\u4ee5\u9009\u62e9\u9012\u5f52\u4e00\u76f4\u8bfb\u53d6\u4e0a\u4e00\u7ea7\u7684\u76ee\u5f55\u7684\u89c4\u5f8b\u3002\u4e8e\u662f\u6211\u4eec\u53ef\u4ee5\u601d\u8003\u901a\u8fc7\u2026\/\u53ef\u4ee5\u8bfb\u53d6\u4e0a\u4e00\u7ea7\u76ee\u5f55\u7684\u8bdd&#xff0c;\u90a3\u4e48\u4ee3\u7801\u4e2d\u6ca1\u6709\u8bbe\u7f6e\u9ed1\u540d\u5355\u6216\u767d\u540d\u5355\u6765\u8fdb\u884c\u8fc7\u6ee4\u7684\u8bdd&#xff0c;\u6211\u4eec\u662f\u5426\u53ef\u4ee5\u901a\u8fc7\u4f20\u5165\u4efb\u610f\u6587\u4ef6\u8bfb\u53d6\u7684\u53c2\u6570\u6765\u8fdb\u884c\u76ee\u5f55\u904d\u5386\u6216\u76ee\u5f55\u7a7f\u8d8a\u5462&#xff1f;<\/p>\n<p>\u5b9e\u9a8c\u662f\u5426\u80fd\u4eceD\u76d8\u8df3\u8f6c\u5230C\u76d8\u4e0b\u5e76\u8bfb\u53d6C\u76d8\u7684\u6587\u4ef6\u76ee\u5f55<\/p>\n<p>http:\/\/localhost:63342\/PhpstormProjects\/Basic%20PHP\/file-manage1.php?path&#061;c:\\\\windows<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260119013410-696d8a12035bf.png\" alt=\"\" \/><\/p>\n<p>\u901a\u8fc7path\u4f20\u5165c:\\\\windows\u53c2\u6570&#xff0c;\u6211\u4eec\u53ef\u4ee5\u53d1\u73b0\u5df2\u7ecf\u8bfb\u53d6\u5230\u4e86C\u76d8Windows\u76ee\u5f55\u4e0b\u7684\u6240\u6709\u6587\u4ef6&#xff0c;\u5219\u53ef\u4ee5\u8bc1\u5b9e\u5b58\u5728\u7740\u76ee\u5f55\u7a7f\u8d8a\u6f0f\u6d1e\u3002<\/p>\n<h3>\u6f0f\u6d1e\u6761\u4ef6\u7ed5\u8fc7\u4e0e\u4fee\u590d<\/h3>\n<h4>\u6f0f\u6d1e\u7ed5\u8fc7<\/h4>\n<p>\u5728\u4e9b\u8bb8\u5f00\u53d1\u8005\u7684\u89c6\u89d2\u4e0b&#xff0c;\u4ed6\u4eec\u6216\u8bb8\u4f1a\u7528\u9ed1\u540d\u5355\u7684\u65b9\u5f0f\u5c06\u4e00\u4e9b\u5e38\u7528\u7684\u6587\u4ef6\u8bfb\u53d6\u53c2\u6570\u52a0\u5165\u9ed1\u540d\u5355\u4e2d\u3002\u4f8b\u5982\u4ee5\u4e0b\u4ee3\u7801<\/p>\n<p><span class=\"token variable\">$black_filepath<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token keyword\">array<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string single-quoted-string\">&#039;..\/&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">in_array<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$dir<\/span><span class=\"token punctuation\">,<\/span><span class=\"token variable\">$black_filepath<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">echo<\/span> <span class=\"token string single-quoted-string\">&#039;&lt;script&gt;alert(&#034;\u7981\u6b62\u8de8\u76ee\u5f55\u8bbf\u95ee&#034;)&lt;\/script&gt;&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token function\">filelist<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$dir<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<ul>\n<li>&lt;font style&#061;&#034;color:rgb(36, 41, 47);background-color:rgba(175, 184, 193, 0.2);&#034;&gt;in_array($dir, $black_filepath)&lt;\/font&gt; \u68c0\u67e5\u7528\u6237\u8f93\u5165\u7684\u76ee\u5f55 &lt;font style&#061;&#034;color:rgb(36, 41, 47);background-color:rgba(175, 184, 193, 0.2);&#034;&gt;$dir&lt;\/font&gt; \u662f\u5426\u5305\u542b &lt;font style&#061;&#034;color:rgb(36, 41, 47);background-color:rgba(175, 184, 193, 0.2);&#034;&gt;&#039;..\/&#039;&lt;\/font&gt;&#xff0c;\u5373\u662f\u5426\u662f\u8bd5\u56fe\u8fdb\u884c\u76ee\u5f55\u7a7f\u8d8a\u3002<\/li>\n<li>\u5982\u679c &lt;font style&#061;&#034;color:rgb(36, 41, 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