{"id":48436,"date":"2024-12-02T15:20:00","date_gmt":"2024-12-02T07:20:00","guid":{"rendered":"https:\/\/fwq.ai\/blog\/48436\/"},"modified":"2024-12-02T15:20:00","modified_gmt":"2024-12-02T07:20:00","slug":"php-%e5%87%bd%e6%95%b0%e5%ae%89%e5%85%a8%e9%97%ae%e9%a2%98%ef%bc%9a%e5%af%b9%e5%ae%89%e5%85%a8%e7%bc%96%e7%a0%81%e7%9a%84%e6%8c%91%e6%88%98%e5%92%8c%e8%a7%a3%e5%86%b3%e6%96%b9%e6%a1%88","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/48436\/","title":{"rendered":"PHP \u51fd\u6570\u5b89\u5168\u95ee\u9898\uff1a\u5bf9\u5b89\u5168\u7f16\u7801\u7684\u6311\u6218\u548c\u89e3\u51b3\u65b9\u6848"},"content":{"rendered":"

<\/b> <\/p>\n

PHP \u51fd\u6570\u5b89\u5168\u95ee\u9898\uff1a\u5bf9\u5b89\u5168\u7f16\u7801\u7684\u6311\u6218\u548c\u89e3\u51b3\u65b9\u6848<\/h1>\n

\u6587\u7ae0<\/span>\u4e0d\u77e5\u9053\u5927\u5bb6\u662f\u5426\u719f\u6089\uff1f\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u4ecb\u7ecd\u300aPHP \u51fd\u6570\u5b89\u5168\u95ee\u9898\uff1a\u5bf9\u5b89\u5168\u7f16\u7801\u7684\u6311\u6218\u548c\u89e3\u51b3\u65b9\u6848\u300b<\/span>\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u4f1a\u8bb2\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u5728\u770b\u5b8c\u672c\u7bc7\u6587\u7ae0\u540e\uff0c\u6709\u66f4\u597d\u7684\u5efa\u8bae\u6216\u8005\u53d1\u73b0\u54ea\u91cc\u6709\u95ee\u9898\uff0c\u5e0c\u671b\u5927\u5bb6\u90fd\u80fd\u79ef\u6781\u8bc4\u8bba\u6307\u51fa\uff0c\u8c22\u8c22\uff01\u5e0c\u671b\u6211\u4eec\u80fd\u4e00\u8d77\u52a0\u6cb9\u8fdb\u6b65\uff01<\/p>\n

PHP\u51fd\u6570\u7684\u5b89\u5168\u95ee\u9898\u6d89\u53caSQL\u6ce8\u5165\u3001\u8de8\u7ad9\u70b9\u811a\u672c\u548c\u76ee\u5f55\u904d\u5386\u7b49\uff0c\u9700\u8981\u91c7\u7528\u5b89\u5168\u7f16\u7801\u5b9e\u8df5\u6765\u4fdd\u62a4\u5e94\u7528\u7a0b\u5e8f\u3002\u8fd9\u4e9b\u5b9e\u8df5\u5305\u62ec\u4f7f\u7528\u51c6\u5907\u597d\u7684\u8bed\u53e5\u9632\u6b62SQL\u6ce8\u5165\uff0c\u8f6c\u4e49\u8f93\u51fa\u9632\u6b62\u8de8\u7ad9\u70b9\u811a\u672c\uff0c\u9a8c\u8bc1\u8f93\u5165\u9632\u6b62\u76ee\u5f55\u904d\u5386\uff0c\u4ee5\u53ca\u4f7f\u7528\u5b89\u5168\u51fd\u6570\u5904\u7406\u6587\u4ef6\u8def\u5f84\u3002\u901a\u8fc7\u5b9e\u65bd\u8fd9\u4e9b\u63aa\u65bd\uff0c\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u521b\u5efa\u66f4\u5b89\u5168\u3001\u66f4\u5065\u58ee\u7684Web\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n

\"PHP<\/p>\n

PHP \u51fd\u6570\u5b89\u5168\u95ee\u9898\uff1a\u5bf9\u5b89\u5168\u7f16\u7801\u7684\u6311\u6218\u548c\u89e3\u51b3\u65b9\u6848<\/h2>\n

\u524d\u8a00<\/strong><\/p>\n

PHP \u51fd\u6570\u4f7f\u7528\u4e0d\u5f53\u53ef\u80fd\u4f1a\u5bfc\u81f4\u4e25\u91cd\u7684\u5b89\u5168\u6027\u95ee\u9898\uff0c\u4f8b\u5982 SQL \u6ce8\u5165\u3001\u8de8\u7ad9\u70b9\u811a\u672c\u548c\u672c\u5730\u6587\u4ef6\u5305\u542b\u3002\u4e3a\u4e86\u4fdd\u62a4\u5e94\u7528\u7a0b\u5e8f\uff0c\u4e86\u89e3\u8fd9\u4e9b\u95ee\u9898\u4ee5\u53ca\u91c7\u7528\u5b89\u5168\u7f16\u7801\u5b9e\u8df5\u81f3\u5173\u91cd\u8981\u3002<\/p>\n

\u6311\u6218<\/strong><\/p>\n

    \n
  • SQL \u6ce8\u5165\uff1a<\/strong>\u5982\u679c\u51fd\u6570\u63a5\u53d7\u7528\u6237\u8f93\u5165\u4f5c\u4e3a SQL \u67e5\u8be2\u7684\u4e00\u90e8\u5206\uff0c\u653b\u51fb\u8005\u53ef\u80fd\u4f1a\u6ce8\u5165\u6076\u610f\u4ee3\u7801\u4ee5\u7834\u574f\u6570\u636e\u5e93\u3002<\/li>\n
  • \u8de8\u7ad9\u70b9\u811a\u672c\uff1a<\/strong>\u5982\u679c\u51fd\u6570\u8f93\u51fa\u672a\u7ecf\u6e05\u7406\u7684\u7528\u6237\u8f93\u5165\uff0c\u653b\u51fb\u8005\u53ef\u80fd\u4f1a\u6ce8\u5165\u6076\u610f\u811a\u672c\uff0c\u4ece\u800c\u63a7\u5236\u53d7\u5bb3\u8005\u7684\u6d4f\u89c8\u5668\u3002<\/li>\n
  • \u76ee\u5f55\u904d\u5386\uff1a<\/strong>\u5982\u679c\u51fd\u6570\u63a5\u53d7\u7528\u6237\u8f93\u5165\u4f5c\u4e3a\u6587\u4ef6\u8def\u5f84\uff0c\u653b\u51fb\u8005\u53ef\u80fd\u4f1a\u4f7f\u7528\u7279\u6b8a\u5b57\u7b26\u6765\u8bbf\u95ee\u5e94\u7528\u7a0b\u5e8f\u4e4b\u5916\u7684\u6587\u4ef6\u3002<\/li>\n<\/ul>\n

    \u89e3\u51b3\u65b9\u6848<\/strong><\/p>\n

      \n
    • \u4f7f\u7528\u51c6\u5907\u597d\u7684\u8bed\u53e5\uff1a<\/strong>\u4f7f\u7528 mysqli_prepare()<\/code> \u548c mysqli_stmt_bind_param()<\/code> \u51c6\u5907 SQL \u67e5\u8be2\uff0c\u9632\u6b62 SQL \u6ce8\u5165\u3002<\/li>\n
    • \u8f6c\u4e49\u8f93\u51fa\uff1a<\/strong>\u4f7f\u7528 htmlspecialchars()<\/code> \u6216 filter_var()<\/code> \u8f6c\u4e49\u7528\u6237\u8f93\u5165\uff0c\u9632\u6b62\u8de8\u7ad9\u70b9\u811a\u672c\u3002<\/li>\n
    • \u9a8c\u8bc1\u8f93\u5165\uff1a<\/strong>\u4f7f\u7528 filter_var()<\/code> \u6216\u6b63\u5219\u8868\u8fbe\u5f0f\u9a8c\u8bc1\u7528\u6237\u8f93\u5165\uff0c\u9632\u6b62\u76ee\u5f55\u904d\u5386\u3002<\/li>\n
    • \u4f7f\u7528\u5b89\u5168\u51fd\u6570\uff1a<\/strong>\u4f7f\u7528 is_dir()<\/code>\u3001is_file()<\/code> \u7b49\u5b89\u5168\u51fd\u6570\u5904\u7406\u6587\u4ef6\u8def\u5f84\u3002<\/li>\n<\/ul>\n

      \u5b9e\u6218\u6848\u4f8b\uff1a\u9632\u6b62 SQL \u6ce8\u5165<\/strong><\/p>\n

      <?php\n\/\/ \u4e0d\u5b89\u5168\u7684\u4ee3\u7801\n$sql = \"SELECT * FROM users WHERE username='\" . $_GET['username'] . \"'\";\n\n\/\/ \u5b89\u5168\u7684\u4ee3\u7801\n$stmt = mysqli_prepare($conn, $sql);\nmysqli_stmt_bind_param($stmt, 's', $_GET['username']);\nmysqli_stmt_execute($stmt);\n?><\/pre>\n
      \u5728\u4e0d\u5b89\u5168\u7684\u4ee3\u7801\u4e2d\uff0c\u653b\u51fb\u8005\u53ef\u4ee5\u8f93\u5165 username=1; DROP TABLE users;<\/code> \u6765\u7834\u574f\u6570\u636e\u5e93\u3002\u5728\u5b89\u5168\u4ee3\u7801\u4e2d\uff0c\u51c6\u5907\u597d\u7684\u8bed\u53e5\u9632\u6b62\u6076\u610f\u4ee3\u7801\u6ce8\u5165\u3002<\/p>\n
      \u7ed3\u8bba<\/strong><\/p>\n
      \u901a\u8fc7\u4e86\u89e3 PHP \u51fd\u6570\u5b89\u5168\u95ee\u9898\u5e76\u91c7\u7528\u5b89\u5168\u7f16\u7801\u5b9e\u8df5\uff0c\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u4fdd\u62a4\u5e94\u7528\u7a0b\u5e8f\u514d\u53d7\u653b\u51fb\u3002\u901a\u8fc7\u4f7f\u7528\u51c6\u5907\u597d\u7684\u8bed\u53e5\u3001\u8f6c\u4e49\u8f93\u51fa\u3001\u9a8c\u8bc1\u8f93\u5165\u548c\u4f7f\u7528\u5b89\u5168\u51fd\u6570\uff0c\u53ef\u4ee5\u521b\u5efa\u66f4\u5b89\u5168\u3001\u66f4\u5065\u58ee\u7684 Web \u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n
      \u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300aPHP \u51fd\u6570\u5b89\u5168\u95ee\u9898\uff1a\u5bf9\u5b89\u5168\u7f16\u7801\u7684\u6311\u6218\u548c\u89e3\u51b3\u65b9\u6848\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~\u7c73\u4e91\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03\u6587\u7ae0\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
      PHP \u51fd\u6570\u5b89\u5168\u95ee\u9898\uff1a\u5bf9\u5b89\u5168\u7f16\u7801\u7684\u6311\u6218\u548c\u89e3\u51b3\u65b9\u6848 \u6587\u7ae0\u4e0d\u77e5\u9053\u5927\u5bb6\u662f\u5426\u719f\u6089\uff1f\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u4ecb\u7ecd\u300aPHP \u51fd\u6570\u5b89\u5168\u95ee\u9898\uff1a\u5bf9\u5b89\u5168\u7f16\u7801\u7684\u6311\u6218\u548c\u89e3\u51b3\u65b9\u6848\u300b\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u4f1a\u8bb2\u5230\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u5728\u770b\u5b8c\u672c\u7bc7\u6587\u7ae0\u540e\uff0c\u6709\u66f4\u597d\u7684\u5efa\u8bae\u6216\u8005\u53d1\u73b0\u54ea\u91cc\u6709\u95ee\u9898\uff0c\u5e0c\u671b\u5927\u5bb6\u90fd\u80fd\u79ef\u6781\u8bc4\u8bba\u6307\u51fa\uff0c\u8c22\u8c22\uff01\u5e0c\u671b\u6211\u4eec\u80fd\u4e00\u8d77\u52a0\u6cb9\u8fdb\u6b65\uff01 PHP\u51fd\u6570\u7684\u5b89\u5168\u95ee\u9898\u6d89\u53caSQL\u6ce8\u5165\u3001\u8de8\u7ad9\u70b9\u811a\u672c\u548c\u76ee\u5f55\u904d\u5386\u7b49\uff0c\u9700\u8981\u91c7\u7528\u5b89\u5168\u7f16\u7801\u5b9e\u8df5\u6765\u4fdd\u62a4\u5e94\u7528\u7a0b\u5e8f\u3002\u8fd9\u4e9b\u5b9e\u8df5\u5305\u62ec\u4f7f\u7528\u51c6\u5907\u597d\u7684\u8bed\u53e5\u9632\u6b62SQL\u6ce8\u5165\uff0c\u8f6c\u4e49\u8f93\u51fa\u9632\u6b62\u8de8\u7ad9\u70b9\u811a\u672c\uff0c\u9a8c\u8bc1\u8f93\u5165\u9632\u6b62\u76ee\u5f55\u904d\u5386\uff0c\u4ee5\u53ca\u4f7f\u7528\u5b89\u5168\u51fd\u6570\u5904\u7406\u6587\u4ef6\u8def\u5f84\u3002\u901a\u8fc7\u5b9e\u65bd\u8fd9\u4e9b\u63aa\u65bd\uff0c\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u521b\u5efa\u66f4\u5b89\u5168\u3001\u66f4\u5065\u58ee\u7684Web\u5e94\u7528\u7a0b\u5e8f\u3002 PHP \u51fd\u6570\u5b89\u5168\u95ee\u9898\uff1a\u5bf9\u5b89\u5168\u7f16\u7801\u7684\u6311\u6218\u548c\u89e3\u51b3\u65b9\u6848 \u524d\u8a00 PHP \u51fd\u6570\u4f7f\u7528\u4e0d\u5f53\u53ef\u80fd\u4f1a\u5bfc\u81f4\u4e25\u91cd\u7684\u5b89\u5168\u6027\u95ee\u9898\uff0c\u4f8b\u5982 SQL \u6ce8\u5165\u3001\u8de8\u7ad9\u70b9\u811a\u672c\u548c\u672c\u5730\u6587\u4ef6\u5305\u542b\u3002\u4e3a\u4e86\u4fdd\u62a4\u5e94\u7528\u7a0b\u5e8f\uff0c\u4e86\u89e3\u8fd9\u4e9b\u95ee\u9898\u4ee5\u53ca\u91c7\u7528\u5b89\u5168\u7f16\u7801\u5b9e\u8df5\u81f3\u5173\u91cd\u8981\u3002 \u6311\u6218 SQL \u6ce8\u5165\uff1a\u5982\u679c\u51fd\u6570\u63a5\u53d7\u7528\u6237\u8f93\u5165\u4f5c\u4e3a SQL \u67e5\u8be2\u7684\u4e00\u90e8\u5206\uff0c\u653b\u51fb\u8005\u53ef\u80fd\u4f1a\u6ce8\u5165\u6076\u610f\u4ee3\u7801\u4ee5\u7834\u574f\u6570\u636e\u5e93\u3002 \u8de8\u7ad9\u70b9\u811a\u672c\uff1a\u5982\u679c\u51fd\u6570\u8f93\u51fa\u672a\u7ecf\u6e05\u7406\u7684\u7528\u6237\u8f93\u5165\uff0c\u653b\u51fb\u8005\u53ef\u80fd\u4f1a\u6ce8\u5165\u6076\u610f\u811a\u672c\uff0c\u4ece\u800c\u63a7\u5236\u53d7\u5bb3\u8005\u7684\u6d4f\u89c8\u5668\u3002 \u76ee\u5f55\u904d\u5386\uff1a\u5982\u679c\u51fd\u6570\u63a5\u53d7\u7528\u6237\u8f93\u5165\u4f5c\u4e3a\u6587\u4ef6\u8def\u5f84\uff0c\u653b\u51fb\u8005\u53ef\u80fd\u4f1a\u4f7f\u7528\u7279\u6b8a\u5b57\u7b26\u6765\u8bbf\u95ee\u5e94\u7528\u7a0b\u5e8f\u4e4b\u5916\u7684\u6587\u4ef6\u3002 \u89e3\u51b3\u65b9\u6848 \u4f7f\u7528\u51c6\u5907\u597d\u7684\u8bed\u53e5\uff1a\u4f7f\u7528 mysqli_prepare() \u548c mysqli_stmt_bind_param() \u51c6\u5907 SQL \u67e5\u8be2\uff0c\u9632\u6b62 SQL \u6ce8\u5165\u3002 \u8f6c\u4e49\u8f93\u51fa\uff1a\u4f7f\u7528 htmlspecialchars() \u6216 filter_var() \u8f6c\u4e49\u7528\u6237\u8f93\u5165\uff0c\u9632\u6b62\u8de8\u7ad9\u70b9\u811a\u672c\u3002 \u9a8c\u8bc1\u8f93\u5165\uff1a\u4f7f\u7528 filter_var() \u6216\u6b63\u5219\u8868\u8fbe\u5f0f\u9a8c\u8bc1\u7528\u6237\u8f93\u5165\uff0c\u9632\u6b62\u76ee\u5f55\u904d\u5386\u3002 \u4f7f\u7528\u5b89\u5168\u51fd\u6570\uff1a\u4f7f\u7528 is_dir()\u3001is_file() \u7b49\u5b89\u5168\u51fd\u6570\u5904\u7406\u6587\u4ef6\u8def\u5f84\u3002 \u5b9e\u6218\u6848\u4f8b\uff1a\u9632\u6b62 SQL \u6ce8\u5165 <?php \/\/ \u4e0d\u5b89\u5168\u7684\u4ee3\u7801 $sql = “SELECT * FROM users WHERE username='” . […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-48436","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/48436","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=48436"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/48436\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=48436"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=48436"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=48436"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}