{"id":35,"date":"2025-04-01T11:11:54","date_gmt":"2025-04-01T03:11:54","guid":{"rendered":"https:\/\/www.zhaozhao123.cn\/php\/?p=35"},"modified":"2025-04-01T11:11:54","modified_gmt":"2025-04-01T03:11:54","slug":"%e5%bd%93%e9%81%87%e5%88%b0%e7%bc%96%e7%a0%81%e9%97%ae%e9%a2%98%e6%97%b6%ef%bc%8cphp%e5%9b%be%e7%89%87%e6%96%87%e4%bb%b6%e5%90%8d%e6%8f%90%e5%8f%96%e5%a6%82%e4%bd%95%e8%a7%a3%e5%86%b3%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.zhaozhao123.cn\/php\/post\/35.html","title":{"rendered":"\u5f53\u9047\u5230\u7f16\u7801\u95ee\u9898\u65f6\uff0cPHP\u56fe\u7247\u6587\u4ef6\u540d\u63d0\u53d6\u5982\u4f55\u89e3\u51b3\uff1f"},"content":{"rendered":"\n

\u5728PHP\u4e2d\u5904\u7406\u5e26\u7f16\u7801\u95ee\u9898\u7684\u56fe\u7247\u6587\u4ef6\u540d\u63d0\u53d6\u65f6\uff0c\u9700\u7ed3\u5408\u89e3\u7801\u51fd\u6570\u4e0e\u8def\u5f84\u89e3\u6790\u65b9\u6cd5\uff0c\u4ee5\u4e0b\u662f\u7cfb\u7edf\u5316\u7684\u89e3\u51b3\u65b9\u6848\uff1a<\/p>\n\n\n\n

\n\n\n\n

\u4e00\u3001\u6838\u5fc3\u5904\u7406\u6b65\u9aa4<\/strong><\/p>\n\n\n\n

    \n
  1. \u5206\u79bbURL\u8def\u5f84\u4e0e\u53c2\u6570<\/strong>
    \u4f7f\u7528 parse_url()<\/code> \u63d0\u53d6\u8def\u5f84\u90e8\u5206\uff0c\u907f\u514d\u67e5\u8be2\u53c2\u6570\uff08\u5982 ?width=800<\/code>\uff09\u5e72\u6270\u6587\u4ef6\u540d\u63d0\u53d6\uff1a<\/li>\n<\/ol>\n\n\n\n
       $url = \"\n   $path = parse_url($url, PHP_URL_PATH); \/\/ \u8f93\u51fa\uff1a\/images\/file%20name.jpg<\/code><\/pre>\n\n\n\n
      \n
    1. \u89e3\u7801\u7f16\u7801\u5b57\u7b26<\/strong>
      \u901a\u8fc7 rawurldecode()<\/code> \u8fd8\u539f\u767e\u5206\u6bd4\u7f16\u7801\u5b57\u7b26\uff08\u5982 %20<\/code> \u8f6c\u4e3a\u7a7a\u683c\uff09\uff0c\u800c\u975e urldecode()<\/code><\/strong>\uff0c\u56e0\u4e3a\u540e\u8005\u4f1a\u989d\u5916\u5904\u7406 +<\/code> \u53f7\uff08\u53ef\u80fd\u5bfc\u81f4\u6587\u4ef6\u540d\u9519\u8bef\uff09\uff1a<\/li>\n<\/ol>\n\n\n\n
         $decoded_path = rawurldecode($path); \/\/ \u8f93\u51fa\uff1a\/images\/file name.jpg<\/code><\/pre>\n\n\n\n
        \n
      1. \u63d0\u53d6\u6587\u4ef6\u540d<\/strong>
        \u7ed3\u5408 basename()<\/code> \u6216 pathinfo()<\/code> \u83b7\u53d6\u6700\u7ec8\u6587\u4ef6\u540d\uff1a<\/li>\n<\/ol>\n\n\n\n
           $filename = basename($decoded_path); \/\/ \u8f93\u51fa\uff1afile name.jpg\n   $info = pathinfo($decoded_path);\n   echo $info['filename']; \/\/ \u8f93\u51fa\uff1afile name<\/code><\/pre>\n\n\n\n
        \n\n\n\n
        \u4e8c\u3001\u590d\u6742\u573a\u666f\u5904\u7406\u65b9\u6848<\/strong>
        **1. *\u542b\u54c8\u5e0c\u6216\u52a8\u6001\u53c2\u6570\u7684URL<\/em>***
        \u82e5URL\u8def\u5f84\u5305\u542b\u52a8\u6001\u53c2\u6570\uff08\u5982 image_v2-1%25.jpg<\/code>\uff09\uff0c\u9700\u5728\u89e3\u7801\u540e\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u7cbe\u51c6\u5339\u914d\uff1a<\/p>\n\n\n\n
           preg_match('\/\\\/([^\\\/?]+)\\.(jpg|png|gif)(?=\\?|$)\/i', $decoded_path, $matches);\n   echo $matches; \/\/ \u8f93\u51fa\uff1aimage_v2-1%<\/code><\/pre>\n\n\n\n
        **2. *\u591a\u5c42\u7ea7\u7f16\u7801\u5904\u7406<\/em>***
        \u5f53URL\u88ab\u591a\u6b21\u7f16\u7801\u65f6\uff08\u5982 file%2520name.jpg<\/code> \u8868\u793a file%20name.jpg<\/code>\uff09\uff0c\u9700\u5faa\u73af\u89e3\u7801\u76f4\u81f3\u65e0\u7f16\u7801\u5b57\u7b26\uff1a<\/p>\n\n\n\n
           do {\n       $decoded = rawurldecode($path);\n   } while ($decoded !== $path && $path = $decoded);<\/code><\/pre>\n\n\n\n
        \n\n\n\n
        \u4e09\u3001\u5b89\u5168\u9a8c\u8bc1\u4e0e\u6269\u5c55\u540d\u8fc7\u6ee4<\/strong><\/p>\n\n\n\n
          \n
        1. \u767d\u540d\u5355\u6821\u9a8c\u6587\u4ef6\u7c7b\u578b<\/strong>
          \u907f\u514d\u6076\u610f\u6587\u4ef6\u4e0a\u4f20\u6216\u8def\u5f84\u904d\u5386\uff1a<\/li>\n<\/ol>\n\n\n\n
             $allowed_ext = ['jpg', 'png', 'gif'];\n   $ext = pathinfo($filename, PATHINFO_EXTENSION);\n   if (!in_array(strtolower($ext), $allowed_ext)) {\n       throw new Exception(\"\u975e\u6cd5\u6587\u4ef6\u7c7b\u578b\");\n   }<\/code><\/pre>\n\n\n\n
            \n
          1. \u9632\u5fa1\u8def\u5f84\u904d\u5386\u653b\u51fb<\/strong>
            \u4f7f\u7528 basename()<\/code> \u81ea\u52a8\u8fc7\u6ee4\u8def\u5f84\u4e2d\u7684 ..\/<\/code> \u7b49\u5371\u9669\u5b57\u7b26\uff1a<\/li>\n<\/ol>\n\n\n\n
               $safe_name = basename($decoded_path); \/\/ \u8f93\u5165 `\/..\/file.jpg` \u2192 \u8f93\u51fa `file.jpg`<\/code><\/pre>\n\n\n\n
            \n\n\n\n
            \u56db\u3001\u65b9\u6cd5\u5bf9\u6bd4\u4e0e\u9009\u578b\u5efa\u8bae<\/strong><\/p>\n\n\n\n
            \u573a\u666f<\/th>\u63a8\u8350\u65b9\u6cd5<\/th>\u4f18\u52bf\u4e0e\u6ce8\u610f\u4e8b\u9879<\/th><\/tr><\/thead>
            \u7b80\u5355\u542b\u7f16\u7801\u7684URL<\/td>parse_url()<\/code>+rawurldecode()<\/code><\/td>\u9ad8\u6548\u4e14\u517c\u5bb9\u591a\u6570\u573a\u666f<\/td><\/tr>
            \u52a8\u6001\u54c8\u5e0c\u6587\u4ef6\u540d<\/td>\u6b63\u5219\u8868\u8fbe\u5f0f\u5339\u914d<\/td>\u7075\u6d3b\u5904\u7406\u590d\u6742\u547d\u540d\u89c4\u5219<\/td><\/tr>
            \u9700\u5206\u79bb\u6269\u5c55\u540d<\/td>pathinfo()<\/code><\/td>\u76f4\u63a5\u83b7\u53d6\u65e0\u6269\u5c55\u540d\u7684\u6587\u4ef6\u540d<\/td><\/tr>
            \u591a\u6b21\u7f16\u7801\u6216\u5d4c\u5957\u53c2\u6570<\/td>\u5faa\u73af\u89e3\u7801+\u6b63\u5219\u6821\u9a8c<\/td>\u786e\u4fdd\u5f7b\u5e95\u8fd8\u539f\u539f\u59cb\u6587\u4ef6\u540d<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
            \n\n\n\n
            \u4e94\u3001\u5b8c\u6574\u793a\u4f8b\u4ee3\u7801<\/strong><\/p>\n\n\n\n
            function extractEncodedFilename($url) {\n    $path = parse_url($url, PHP_URL_PATH);\n    $decoded_path = rawurldecode($path);\n    $filename = basename($decoded_path);\n\n    \/\/ \u6821\u9a8c\u6269\u5c55\u540d\n    $ext = pathinfo($filename, PATHINFO_EXTENSION);\n    if (!in_array(strtolower($ext), ['jpg', 'png'])) {\n        return null;\n    }\n    return $filename;\n}\n\n\/\/ \u6d4b\u8bd5\u7528\u4f8b\necho extractEncodedFilename(' \n\/\/ \u8f93\u51fa\uff1afile name.jpg<\/code><\/pre>\n\n\n\n
            \u603b\u7ed3<\/strong>\uff1a\u4f18\u5148\u901a\u8fc7 rawurldecode()<\/code> \u89e3\u51b3\u7f16\u7801\u95ee\u9898\uff0c\u7ed3\u5408\u8def\u5f84\u89e3\u6790\u4e0e\u5b89\u5168\u8fc7\u6ee4\uff0c\u53ef\u8986\u76d6\u7edd\u5927\u591a\u6570\u5e26\u7f16\u7801\u7684\u6587\u4ef6\u540d\u63d0\u53d6\u573a\u666f\u3002\u5bf9\u7279\u6b8a\u52a8\u6001\u53c2\u6570\uff0c\u53ef\u5b9a\u5236\u6b63\u5219\u89c4\u5219\u63d0\u5347\u51c6\u786e\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
            \u5728PHP\u4e2d\u5904\u7406\u5e26\u7f16\u7801\u95ee\u9898\u7684\u56fe\u7247\u6587\u4ef6\u540d\u63d0\u53d6\u65f6\uff0c\u9700\u7ed3\u5408\u89e3\u7801\u51fd\u6570\u4e0e\u8def\u5f84\u89e3\u6790\u65b9\u6cd5\uff0c\u4ee5\u4e0b\u662f\u7cfb\u7edf\u5316\u7684\u89e3\u51b3\u65b9\u6848\uff1a \u4e00\u3001\u6838\u5fc3\u5904\u7406\u6b65\u9aa4 \u4e8c\u3001\u590d\u6742\u573a\u666f\u5904\u7406\u65b9\u6848**1. *\u542b\u54c8\u5e0c\u6216\u52a8\u6001\u53c2\u6570\u7684URL***\u82e5URL\u8def\u5f84\u5305\u542b\u52a8\u6001\u53c2\u6570\uff08\u5982 image_v2-1%25.jpg\uff09\uff0c\u9700\u5728\u89e3\u7801\u540e\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u7cbe\u51c6\u5339\u914d\uff1a **2. *\u591a\u5c42\u7ea7\u7f16\u7801\u5904\u7406***\u5f53U..<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[28],"tuisongtax":[],"class_list":["post-35","post","type-post","status-publish","format-standard","hentry","category-jswz","tag-phptpwjmtq"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.zhaozhao123.cn\/php\/wp-json\/wp\/v2\/posts\/35","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zhaozhao123.cn\/php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zhaozhao123.cn\/php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zhaozhao123.cn\/php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zhaozhao123.cn\/php\/wp-json\/wp\/v2\/comments?post=35"}],"version-history":[{"count":0,"href":"https:\/\/www.zhaozhao123.cn\/php\/wp-json\/wp\/v2\/posts\/35\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.zhaozhao123.cn\/php\/wp-json\/wp\/v2\/media?parent=35"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhaozhao123.cn\/php\/wp-json\/wp\/v2\/categories?post=35"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhaozhao123.cn\/php\/wp-json\/wp\/v2\/tags?post=35"},{"taxonomy":"tuisongtax","embeddable":true,"href":"https:\/\/www.zhaozhao123.cn\/php\/wp-json\/wp\/v2\/tuisongtax?post=35"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}