{"id":30731,"date":"2023-12-29T17:42:06","date_gmt":"2023-09-28T20:43:46","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/php%e5%ae%89%e5%85%a8%e7%9b%b8%e5%85%b3\/"},"modified":"2025-08-12T20:33:17","modified_gmt":"2025-08-12T12:33:17","slug":"php%e5%ae%89%e5%85%a8%e7%9b%b8%e5%85%b3","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/php%e5%ae%89%e5%85%a8%e7%9b%b8%e5%85%b3\/","title":{"rendered":"PHP\u5b89\u5168\u76f8\u5173"},"content":{"rendered":"<p>\u6211\u5199\u8fd9\u7bc7\u6587\u7ae0\u662f\u4f5c\u4e3a\u4ee5\u4e0b\u4e66\u7c4d\u7684\u603b\u7ed3\u4e4b\u4e00\u3002<\/p>\n<ul class=\"post-ul\">\u4f53\u7cfb\u7684\u306b\u5b66\u3076 \u5b89\u5168\u306aWeb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u4f5c\u308a\u65b9 \u7b2c2\u7248\uff3b\u56fa\u5b9a\u7248\uff3d\u3000\u8106\u5f31\u6027\u304c\u751f\u307e\u308c\u308b\u539f\u7406\u3068\u5bfe\u7b56\u306e\u5b9f\u8df5<\/ul>\n<h1>Web\u5e94\u7528\u7a0b\u5e8f\u7684\u8f93\u5165\u662f\u5e72\u4ec0\u4e48<\/h1>\n<p>\u5728\u8f93\u5165\u5904\u7406\u4e2d\uff0c\u5bf9\u8f93\u5165\u503c\u8fdb\u884c\u4ee5\u4e0b\u5904\u7406\u3002<\/p>\n<p>a. \u6587\u5b57\u7f16\u7801\u7684\u6709\u6548\u6027\u9a8c\u8bc1 \u2192 \u4e3a\u4e86\u9632\u8303\u4f7f\u7528\u6587\u5b57\u7f16\u7801\u7684\u653b\u51fb\u8fdb\u884c\u5bf9\u7b56<br \/>\nb. \u6587\u5b57\u7f16\u7801\u7684\u8f6c\u6362 \u2192 \u7531\u4e8eHTTP\u6d88\u606f\u548c\u7a0b\u5e8f\u5185\u90e8\u4f7f\u7528\u7684\u7f16\u7801\u4e0d\u540c\uff0c\u9700\u8981\u8fdb\u884c\u81ea\u52a8\u7f16\u7801\u8f6c\u6362<br \/>\nc. \u8f93\u5165\u503c\u7684\u6709\u6548\u6027\u9a8c\u8bc1 \u2192 \u4f5c\u4e3a\u5b89\u5168\u7684\u9884\u9632\u63aa\u65bd<\/p>\n<h2>\u5bf9\u6587\u5b57\u7f16\u7801\u8fdb\u884c\u9a8c\u8bc1<\/h2>\n<p>\u5728PHP\u4e2d\u53ef\u4ee5\u4f7f\u7528mb_check_encoding\u51fd\u6570\u3002<\/p>\n<h2>\u6587\u5b57\u7f16\u7801\u7684\u8f6c\u6362<\/h2>\n<p>\u5728PHP\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7php.ini\u6587\u4ef6\u8fdb\u884c\u914d\u7f6e\uff0c\u9009\u62e9\u81ea\u52a8\u8f6c\u6362\u6216\u660e\u786e\u8f6c\u6362\u7684\u65b9\u5f0f\u3002<\/p>\n<h2>\u8f93\u5165\u503c\u9a8c\u8bc1 (r\u00f9 l\u00ec zh\u00ed<\/h2>\n<h3>\u4e8c\u8fdb\u5236\u5b89\u5168\u548c\u96f6\u5b57\u8282\u653b\u51fb<\/h3>\n<h4>\u4e8c\u8fdb\u5236\u5b89\u5168<\/h4>\n<p>\u65e0\u8bba\u8f93\u5165\u503c\u662f\u4ec0\u4e48\u6837\u7684\u5b57\u8282\u5e8f\u5217\uff0c\u90fd\u80fd\u6b63\u786e\u5904\u7406\u3002<br \/>\n\u5178\u578b\u60c5\u51b5\u4e0b\uff0c\u5b83\u6307\u7684\u662f\u5373\u4f7f\u51fa\u73b0\u4e86\u503c\u4e3a\u96f6\u7684\u5b57\u8282\uff08\u7a7a\u5b57\u8282\uff0c\u5728PHP\u8bed\u8a00\u4e2d\u8868\u793a\u4e3a\\ 0\uff09\uff0c\u4e5f\u80fd\u6b63\u786e\u5904\u7406\u3002<\/p>\n<p>\u5728C\u8bed\u8a00\u3001Unix\u548cWindows\u7684API\u4e2d\uff0c\u5c06null\u5b57\u8282\u89c6\u4e3a\u5b57\u7b26\u4e32\u7684\u7ed3\u675f\u7b26\u53f7\uff0c\u56e0\u6b64\u5bf9null\u5b57\u8282\u7279\u6b8a\u5904\u7406\u3002<\/p>\n<p>\u4f7f\u7528C\u8bed\u8a00\u5f00\u53d1\u7684PHP\u6709\u4e00\u4e2a\u51fd\u6570\uff0c\u5b83\u5c06\u7a7a\u5b57\u8282\u4f5c\u4e3a\u5b57\u7b26\u4e32\u7684\u7ec8\u70b9\uff0c\u4ece\u800c\u622a\u65ad\u5176\u540e\u7684\u90e8\u5206\u3002<br \/>\n\u8fd9\u6837\u7684\u51fd\u6570\u88ab\u79f0\u4e3a\u975e\u4e8c\u8fdb\u5236\u5b89\u5168\u51fd\u6570\u3002<\/p>\n<h3>\u907f\u514d\u8fdb\u884cereg\u68c0\u67e5<\/h3>\n<blockquote><p>\u8fd9\u4e2a\u51fd\u6570\u5728 PHP 5.3.0 \u7248\u672c\u88ab\u6807\u8bb0\u4e3a\u4e0d\u518d\u63a8\u8350\u4f7f\u7528\uff0c\u5e76\u5728 PHP 7.0.0 \u7248\u672c\u88ab\u5220\u9664\u3002<\/p><\/blockquote>\n<pre class=\"post-pre\"><code><span class=\"nt\">&lt;body&gt;<\/span>\r\n<span class=\"cp\">&lt;?php<\/span>\r\n  <span class=\"nv\">$p<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$_GET<\/span><span class=\"p\">[<\/span><span class=\"s1\">'p'<\/span><span class=\"p\">];<\/span>\r\n  <span class=\"k\">if<\/span> <span class=\"p\">(<\/span><span class=\"nb\">ereg<\/span><span class=\"p\">(<\/span><span class=\"s1\">'^[0-9]+$'<\/span><span class=\"p\">,<\/span> <span class=\"nv\">$p<\/span><span class=\"p\">)<\/span> <span class=\"o\">===<\/span> <span class=\"kc\">FALSE<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">die<\/span><span class=\"p\">(<\/span><span class=\"s1\">'\u6574\u6570\u5024\u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044'<\/span><span class=\"p\">);<\/span>\r\n  <span class=\"p\">}<\/span>\r\n  <span class=\"k\">echo<\/span> <span class=\"nv\">$p<\/span><span class=\"p\">;<\/span>\r\n<span class=\"cp\">?&gt;<\/span>\r\n<span class=\"nt\">&lt;\/body&gt;<\/span>\r\n<\/code><\/pre>\n<blockquote><p>\u6765\u6e90\uff1a\u4ece\u300a\u7cfb\u7edf\u5b66\u4e60\u5b89\u5168Web\u5e94\u7528\u7a0b\u5e8f\u7684\u6784\u5efa\u65b9\u6cd5\u7b2c2\u7248\uff08\u56fa\u5b9a\u7248\uff09\uff1a\u8106\u5f31\u6027\u4ea7\u751f\u7684\u539f\u7406\u548c\u5e94\u5bf9\u5b9e\u8df5\u300b\u4e2d\u3002<\/p><\/blockquote>\n<p>\u5bf9\u4e8e\u8fd9\u6bb5\u4ee3\u7801\uff0c\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u8bbf\u95ee\u53ef\u907f\u514dereg\uff1a<br \/>\n?p=1%00<script>alert('XSS')<\/script><\/p>\n<h4>\u88ab\u56de\u907f\u7684\u539f\u56e0<\/h4>\n<p>URL\u4e2d\u542b\u6709%00\u3002\u8fd9\u8868\u793a\u4e3a\u7a7a\u5b57\u8282\uff0c\u5373\u7a7a\u5b57\u7b26\uff0c\u56e0\u4e3aereg\u51fd\u6570\u4e0d\u662f\u4e8c\u8fdb\u5236\u5b89\u5168\u7684\u51fd\u6570\uff0c\u5b83\u4f1a\u5728\u9047\u5230\u975e0\u5b57\u8282\u65f6\u5224\u65ad\u5b57\u7b26\u4e32\u5df2\u7ed3\u675f\u3002<\/p>\n<p>\u53ea\u9700\u8981\u4f7f\u7528\u4e8c\u8fdb\u5236\u5b89\u5168\u7684\u51fd\u6570\u6765\u5f00\u53d1\u5e94\u7528\u7a0b\u5e8f\uff0c\u5c31\u53ef\u4ee5\u5e94\u5bf9\u7a7a\u6307\u9488\u5f15\u7528\u95ee\u9898\uff0c\u4f46\u8fd9\u5f88\u56f0\u96be\u3002<\/p>\n<p>\u56e0\u4e3a\u89c4\u8303\u4e0a\u4e0d\u5141\u8bb8\u53c2\u6570\u4e2d\u5305\u542b\u7a7a\u5b57\u8282\uff0c\u5c31\u50cf\u6587\u4ef6\u540d\u4e00\u6837\u3002<\/p>\n<p>\u4e3a\u4e86\u8fbe\u5230\u8fd9\u4e2a\u76ee\u7684\uff0c\u53ef\u4ee5\u5728\u5e94\u7528\u7a0b\u5e8f\u7684\u5165\u53e3\u5904\u4f7f\u7528\u500d\u7eb3\u5947\u5b89\u5168\u6765\u68c0\u67e5\u8f93\u5165\u503c\u7684\u5b57\u8282\u6d41\uff0c\u5e76\u4e14\u5982\u679c\u5b58\u5728\u5b57\u8282\u6d41\uff0c\u5219\u5c06\u5176\u89c6\u4e3a\u9519\u8bef\u7684\u65b9\u6cd5\u3002<\/p>\n<h3>\u68c0\u67e5\u63a7\u5236\u7b26<\/h3>\n<p>\u63a7\u5236\u5b57\u662f\u6307\u901a\u5e38\u4e0d\u663e\u793a\u6362\u884c\u3001\u5236\u8868\u7b26\u7b49\u4e0d\u53ef\u89c1\u5b57\u7b26\uff0c\u5176\u4e2d\u5305\u62ec\u4e86\u7a7a\u5b57\u8282\u3002<\/p>\n<h3>\u6587\u5b57\u6570\u91cf\u7684\u68c0\u67e5<\/h3>\n<p>\u5e94\u8be5\u68c0\u67e5\u6240\u6709\u53c2\u6570\u7684\u6700\u5927\u5b57\u7b26\u6570\u3002<br \/>\n\u8fd9\u6837\u505a\u5728\u5b89\u5168\u65b9\u9762\u4f1a\u66f4\u52a0\u4fdd\u9669\u3002<br \/>\n\u56e0\u4e3a\u957f\u5b57\u7b26\u4e32\u7ecf\u5e38\u88ab\u7528\u4e8e\u653b\u51fb\u3002<\/p>\n<h3>PHP\u7684\u6b63\u5219\u8868\u8fbe\u5f0f<\/h3>\n<p>\u6b63\u5219\u8868\u8fbe\u5f0f\u5bf9\u4e8e\u8f93\u5165\u503c\u7684\u9a8c\u8bc1\u975e\u5e38\u65b9\u4fbf\u3002<\/p>\n<div>\n<div class=\"post-table\">\u95a2\u6570\u8aac\u660eperg\u6587\u5b57\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u304cUTF-8\u306e\u5834\u5408\u306e\u307f\u65e5\u672c\u8a9e\u304c\u4f7f\u3048\u308bmb_ereg\u69d8\u3005\u306a\u6587\u5b57\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306b\u4f7f\u3048\u308b<\/div>\n<\/div>\n<h4>\u5339\u914d\u5305\u542b1\u81f35\u4e2a\u5b57\u7b26\u7684\u82f1\u6587\u5b57\u6bcd\u548c\u6570\u5b57\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u3002<\/h4>\n<pre class=\"post-pre\"><code><span class=\"nb\">preg_match<\/span><span class=\"p\">(<\/span><span class=\"s1\">'\/A[a-z0-9]{1,5}\\z\/ui'<\/span><span class=\"p\">,<\/span><span class=\"nv\">$p<\/span><span class=\"p\">);<\/span>\r\n<\/code><\/pre>\n<blockquote><p>\u8fd9\u6bb5\u6587\u5b57\u7684\u6765\u6e90\u662f\u300a\u4f53\u7cfb\u7684\u5b66\u4e60 \u5b89\u5168\u7684Web\u5e94\u7528\u7a0b\u5e8f\u6784\u5efa\u65b9\u6cd5 \u7b2c2\u7248\uff3b\u56fa\u5b9a\u7248\uff3d \u751f\u4ea7\u8106\u5f31\u6027\u7684\u539f\u7406\u548c\u5bf9\u7b56\u5b9e\u8df5\u300b\u3002<\/p><\/blockquote>\n<div>\n<div class=\"post-table\">\u540d\u524d\u8aac\u660eu\u4fee\u98fe\u5b50UTF-8\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3059\u3002i\u4fee\u98fe\u5b50\u5927\u6587\u5b57\u5c0f\u6587\u5b57\u3092\u533a\u5225\u3057\u306a\u3044<\/div>\n<\/div>\n<p>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u4e0d\u9700\u8981\u4f7f\u7528u\u4fee\u9970\u7b26\u3002\u7136\u800c\uff0c\u7531\u4e8e\u6b63\u5219\u8868\u8fbe\u5f0f\u4e2d\u7684&#8221;.&#8221;\u53ef\u80fd\u5bfc\u81f4\u610f\u5916\u7ed3\u679c\uff0c\u6240\u4ee5\u6700\u597d\u59cb\u7ec8\u6307\u5b9au\u4fee\u9970\u7b26\u3002<\/p>\n<h5>\u6211\u4eec\u7528\\A\u548c\\z\u6765\u8868\u793a\u6574\u4f53\u4e00\u81f4\u3002<\/h5>\n<p>\u6570\u636e\u7684\u5f00\u59cb\u7531\\A\u8868\u793a\uff0c\u6570\u636e\u7684\u7ed3\u5c3e\u7531\\z\u8868\u793a\u3002<br \/>\n^\u548c$\u8868\u793a\u884c\u7684\u5f00\u59cb\u548c\u7ed3\u5c3e\uff0c\u6240\u4ee5$\u53ef\u4ee5\u5339\u914d\u6362\u884c\u7b26\u3002<br \/>\n\u56e0\u6b64\uff0c\u5c06^\u548c$\u7528\u4f5c\u6570\u636e\u7684\u5f00\u59cb\u548c\u7ed3\u5c3e\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6545\u969c\u53d1\u751f\u3002<\/p>\n<h1>\u5f15\u7528\u8d44\u6599<\/h1>\n<ul class=\"post-ul\">\u4f53\u7cfb\u7684\u306b\u5b66\u3076 \u5b89\u5168\u306aWeb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u4f5c\u308a\u65b9 \u7b2c2\u7248\uff3b\u56fa\u5b9a\u7248\uff3d\u3000\u8106\u5f31\u6027\u304c\u751f\u307e\u308c\u308b\u539f\u7406\u3068\u5bfe\u7b56\u306e\u5b9f\u8df5<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u6211\u5199\u8fd9\u7bc7\u6587\u7ae0\u662f\u4f5c\u4e3a\u4ee5\u4e0b\u4e66\u7c4d\u7684\u603b\u7ed3\u4e4b\u4e00\u3002 \u4f53\u7cfb\u7684\u306b\u5b66\u3076 \u5b89\u5168\u306aWeb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u4f5c\u308a\u65b9 \u7b2c2\u7248\uff3b\u56fa\u5b9a\u7248\uff3d\u3000 [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-30731","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>PHP\u5b89\u5168\u76f8\u5173 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8ePHP\u5b89\u5168\u76f8\u5173\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/php\u5b89\u5168\u76f8\u5173\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" 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