{"id":3018,"date":"2025-03-19T22:05:17","date_gmt":"2025-03-19T14:05:17","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=3018"},"modified":"2025-03-19T22:05:17","modified_gmt":"2025-03-19T14:05:17","slug":"php-%e8%a1%a8%e5%8d%95-%e9%aa%8c%e8%af%81%e9%82%ae%e4%bb%b6%e5%92%8c-url","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/03\/19\/php-%e8%a1%a8%e5%8d%95-%e9%aa%8c%e8%af%81%e9%82%ae%e4%bb%b6%e5%92%8c-url\/","title":{"rendered":"PHP \u8868\u5355 – \u9a8c\u8bc1\u90ae\u4ef6\u548c URL"},"content":{"rendered":"\n

\u5728 Web \u5f00\u53d1\u4e2d\uff0c\u8868\u5355\u5b57\u6bb5\u5982\u7535\u5b50\u90ae\u4ef6\uff08email\uff09\u548c URL \u9700\u8981\u8fdb\u884c\u9a8c\u8bc1\uff0c\u786e\u4fdd\u7528\u6237\u8f93\u5165\u7684\u5185\u5bb9\u7b26\u5408\u6b63\u786e\u7684\u683c\u5f0f\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7 PHP \u4e2d\u7684\u5185\u7f6e\u51fd\u6570\u6765\u5b9e\u73b0\uff0c\u5e38\u89c1\u7684\u9a8c\u8bc1\u65b9\u6cd5\u6709\uff1a\u4f7f\u7528 filter_var()<\/code> \u51fd\u6570\u6765\u9a8c\u8bc1\u7535\u5b50\u90ae\u4ef6\u548c URL \u7684\u6709\u6548\u6027\u3002<\/p>\n\n\n\n

\n\n\n\n

1\ufe0f\u20e3 \u90ae\u4ef6\u5730\u5740\u9a8c\u8bc1<\/strong><\/h2>\n\n\n\n

\u7535\u5b50\u90ae\u4ef6\u5730\u5740\u9a8c\u8bc1\u662f\u8868\u5355\u9a8c\u8bc1\u4e2d\u975e\u5e38\u91cd\u8981\u7684\u4e00\u90e8\u5206\u3002\u4f7f\u7528 filter_var()<\/code> \u51fd\u6570\u53ef\u4ee5\u8f7b\u677e\u9a8c\u8bc1\u90ae\u7bb1\u5730\u5740\u7684\u683c\u5f0f\u3002<\/p>\n\n\n\n

HTML \u8868\u5355\u793a\u4f8b\uff08\u7535\u5b50\u90ae\u4ef6\u5b57\u6bb5\uff09<\/strong><\/h3>\n\n\n\n
<form action=\"process_form.php\" method=\"POST\">\n    <label for=\"email\">\u90ae\u7bb1:<\/label>\n    <input type=\"email\" id=\"email\" name=\"email\" required>\n\n    <input type=\"submit\" value=\"\u63d0\u4ea4\">\n<\/form><\/code><\/pre>\n\n\n\n
PHP \u90ae\u4ef6\u9a8c\u8bc1\u793a\u4f8b<\/strong><\/h3>\n\n\n\n
<?php\nif ($_SERVER[\"REQUEST_METHOD\"] == \"POST\") {\n    $email = $_POST[\"email\"];\n    $errors = [];\n\n    \/\/ \u4f7f\u7528 filter_var() \u51fd\u6570\u9a8c\u8bc1\u90ae\u7bb1\n    if (empty($email)) {\n        $errors[] = \"\u90ae\u7bb1\u662f\u5fc5\u586b\u9879\uff01\";\n    } elseif (!filter_var($email, FILTER_VALIDATE_EMAIL)) {\n        $errors[] = \"\u8bf7\u8f93\u5165\u6709\u6548\u7684\u90ae\u7bb1\u5730\u5740\uff01\";\n    }\n\n    \/\/ \u663e\u793a\u9a8c\u8bc1\u7ed3\u679c\n    if (empty($errors)) {\n        echo \"\u2705 \u90ae\u7bb1\u5730\u5740\u6709\u6548\uff1a$email <br>\";\n    } else {\n        foreach ($errors as $error) {\n            echo \"\u274c $error <br>\";\n        }\n    }\n}\n?><\/code><\/pre>\n\n\n\n
\u4ee3\u7801\u89e3\u8bfb\uff1a<\/strong><\/h3>\n\n\n\n
    \n
  1. filter_var($email, FILTER_VALIDATE_EMAIL)<\/code><\/strong>\uff1a\u8be5\u51fd\u6570\u9a8c\u8bc1\u90ae\u7bb1\u5730\u5740\u662f\u5426\u7b26\u5408\u6807\u51c6\u683c\u5f0f\u3002\u5982\u679c\u8f93\u5165\u7684\u90ae\u7bb1\u4e0d\u5408\u6cd5\uff0c\u51fd\u6570\u8fd4\u56de false<\/code>\u3002<\/li>\n\n\n\n
  2. \u9519\u8bef\u5904\u7406<\/strong>\uff1a\u5982\u679c\u90ae\u7bb1\u65e0\u6548\uff0c\u5411\u7528\u6237\u8fd4\u56de\u9519\u8bef\u63d0\u793a\uff0c\u786e\u4fdd\u7528\u6237\u8f93\u5165\u4e86\u6b63\u786e\u7684\u7535\u5b50\u90ae\u4ef6\u3002<\/li>\n<\/ol>\n\n\n\n
    \n\n\n\n
    2\ufe0f\u20e3 URL \u9a8c\u8bc1<\/strong><\/h2>\n\n\n\n
    URL \u9a8c\u8bc1\u7528\u4e8e\u786e\u4fdd\u7528\u6237\u8f93\u5165\u7684\u5730\u5740\u7b26\u5408\u6709\u6548\u7684 URL \u683c\u5f0f\u3002filter_var()<\/code> \u4e5f\u53ef\u4ee5\u7528\u6765\u9a8c\u8bc1 URL\u3002<\/p>\n\n\n\n
    HTML \u8868\u5355\u793a\u4f8b\uff08URL \u5b57\u6bb5\uff09<\/strong><\/h3>\n\n\n\n
    <form action=\"process_form.php\" method=\"POST\">\n    <label for=\"url\">\u7f51\u7ad9\u5730\u5740:<\/label>\n    <input type=\"url\" id=\"url\" name=\"url\" required>\n\n    <input type=\"submit\" value=\"\u63d0\u4ea4\">\n<\/form><\/code><\/pre>\n\n\n\n
    PHP URL \u9a8c\u8bc1\u793a\u4f8b<\/strong><\/h3>\n\n\n\n
    <?php\nif ($_SERVER[\"REQUEST_METHOD\"] == \"POST\") {\n    $url = $_POST[\"url\"];\n    $errors = [];\n\n    \/\/ \u4f7f\u7528 filter_var() \u51fd\u6570\u9a8c\u8bc1 URL\n    if (empty($url)) {\n        $errors[] = \"\u7f51\u7ad9\u5730\u5740\u662f\u5fc5\u586b\u9879\uff01\";\n    } elseif (!filter_var($url, FILTER_VALIDATE_URL)) {\n        $errors[] = \"\u8bf7\u8f93\u5165\u6709\u6548\u7684 URL \u5730\u5740\uff01\";\n    }\n\n    \/\/ \u663e\u793a\u9a8c\u8bc1\u7ed3\u679c\n    if (empty($errors)) {\n        echo \"\u2705 URL \u5730\u5740\u6709\u6548\uff1a$url <br>\";\n    } else {\n        foreach ($errors as $error) {\n            echo \"\u274c $error <br>\";\n        }\n    }\n}\n?><\/code><\/pre>\n\n\n\n
    \u4ee3\u7801\u89e3\u8bfb\uff1a<\/strong><\/h3>\n\n\n\n
      \n
    1. filter_var($url, FILTER_VALIDATE_URL)<\/code><\/strong>\uff1a\u8be5\u51fd\u6570\u68c0\u67e5 URL \u662f\u5426\u7b26\u5408\u6807\u51c6\u683c\u5f0f\uff0c\u5305\u62ec\u534f\u8bae\u90e8\u5206\uff08\u5982 http:\/\/<\/code> \u6216 https:\/\/<\/code>\uff09\uff0c\u57df\u540d\u90e8\u5206\uff0c\u751a\u81f3\u8def\u5f84\u90e8\u5206\u3002\u82e5\u4e0d\u7b26\u5408\u683c\u5f0f\uff0c\u8fd4\u56de false<\/code>\u3002<\/li>\n\n\n\n
    2. \u9519\u8bef\u5904\u7406<\/strong>\uff1a\u5982\u679c\u8f93\u5165\u7684 URL \u4e0d\u5408\u6cd5\uff0c\u4f1a\u63d0\u793a\u7528\u6237\u4fee\u6539\u4e3a\u6709\u6548\u7684 URL\u3002<\/li>\n<\/ol>\n\n\n\n
      \n\n\n\n
      3\ufe0f\u20e3 \u5c0f\u7ed3<\/strong><\/h2>\n\n\n\n
      \u5b57\u6bb5<\/strong><\/th>\u9a8c\u8bc1\u65b9\u6cd5<\/strong><\/th>\u8bf4\u660e<\/strong><\/th><\/tr><\/thead>
      \u90ae\u7bb1<\/td>filter_var($email, FILTER_VALIDATE_EMAIL)<\/code><\/td>\u9a8c\u8bc1\u7535\u5b50\u90ae\u4ef6\u683c\u5f0f\u662f\u5426\u6709\u6548<\/td><\/tr>
      URL<\/td>filter_var($url, FILTER_VALIDATE_URL)<\/code><\/td>\u9a8c\u8bc1 URL \u683c\u5f0f\u662f\u5426\u6709\u6548<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
      \n\n\n\n
      4\ufe0f\u20e3 \u5e38\u89c1\u7684 filter_var()<\/code> \u4f7f\u7528\u573a\u666f<\/strong><\/h2>\n\n\n\n