{"id":3015,"date":"2025-03-19T22:04:00","date_gmt":"2025-03-19T14:04:00","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=3015"},"modified":"2025-03-19T22:04:00","modified_gmt":"2025-03-19T14:04:00","slug":"php-%e8%a1%a8%e5%8d%95-%e5%bf%85%e9%9c%80%e5%ad%97%e6%ae%b5%e9%aa%8c%e8%af%81","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/03\/19\/php-%e8%a1%a8%e5%8d%95-%e5%bf%85%e9%9c%80%e5%ad%97%e6%ae%b5%e9%aa%8c%e8%af%81\/","title":{"rendered":"PHP \u8868\u5355 &#8211; \u5fc5\u9700\u5b57\u6bb5\u9a8c\u8bc1"},"content":{"rendered":"\n<p>\u5728 Web \u5f00\u53d1\u4e2d\uff0c\u8868\u5355\u7684\u5fc5\u9700\u5b57\u6bb5\u9a8c\u8bc1\u662f\u786e\u4fdd\u7528\u6237\u8f93\u5165\u5fc5\u586b\u4fe1\u606f\u7684\u5e38\u89c1\u64cd\u4f5c\u3002\u901a\u8fc7\u9a8c\u8bc1\u7528\u6237\u662f\u5426\u586b\u5199\u4e86\u8fd9\u4e9b\u5fc5\u8981\u5b57\u6bb5\uff0c\u53ef\u4ee5\u63d0\u9ad8\u6570\u636e\u7684\u5b8c\u6574\u6027\uff0c\u5e76\u907f\u514d\u5728\u540e\u7aef\u5904\u7406\u65f6\u9047\u5230\u95ee\u9898\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>1\ufe0f\u20e3 \u5fc5\u9700\u5b57\u6bb5\u7684\u4f5c\u7528<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u9632\u6b62\u7a7a\u8868\u5355\u63d0\u4ea4<\/strong>\uff1a\u786e\u4fdd\u7528\u6237\u8f93\u5165\u4e86\u5173\u952e\u6570\u636e\u3002<\/li>\n\n\n\n<li><strong>\u63d0\u9ad8\u6570\u636e\u51c6\u786e\u6027<\/strong>\uff1a\u9a8c\u8bc1\u5fc5\u8981\u6570\u636e\u7684\u6709\u6548\u6027\u3002<\/li>\n\n\n\n<li><strong>\u7528\u6237\u4f53\u9a8c\u4f18\u5316<\/strong>\uff1a\u51cf\u5c11\u65e0\u6548\u8868\u5355\u63d0\u4ea4\uff0c\u63d0\u9ad8\u4ea4\u4e92\u6548\u679c\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>2\ufe0f\u20e3 HTML \u8868\u5355\u793a\u4f8b<\/strong><\/h2>\n\n\n\n<p>\u9996\u5148\uff0c\u6211\u4eec\u521b\u5efa\u4e00\u4e2a HTML \u8868\u5355\uff0c\u5176\u4e2d <code>name<\/code>\u3001<code>email<\/code> \u548c <code>message<\/code> \u5b57\u6bb5\u662f\u5fc5\u586b\u9879\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;form action=\"process_form.php\" method=\"POST\"&gt;\n    &lt;label for=\"name\"&gt;\u59d3\u540d:&lt;\/label&gt;\n    &lt;input type=\"text\" id=\"name\" name=\"name\" required&gt;\n\n    &lt;label for=\"email\"&gt;\u90ae\u7bb1:&lt;\/label&gt;\n    &lt;input type=\"email\" id=\"email\" name=\"email\" required&gt;\n\n    &lt;label for=\"message\"&gt;\u7559\u8a00:&lt;\/label&gt;\n    &lt;textarea id=\"message\" name=\"message\" required&gt;&lt;\/textarea&gt;\n\n    &lt;input type=\"submit\" value=\"\u63d0\u4ea4\"&gt;\n&lt;\/form&gt;<\/code><\/pre>\n\n\n\n<p>\u5728\u4e0a\u9762\u7684 HTML \u4e2d\uff0c<code>required<\/code> \u5c5e\u6027\u7528\u4e8e\u6307\u5b9a\u8868\u5355\u4e2d\u7684\u5fc5\u586b\u5b57\u6bb5\u3002\u8fd9\u610f\u5473\u7740\u7528\u6237\u5728\u63d0\u4ea4\u8868\u5355\u4e4b\u524d\u5fc5\u987b\u586b\u5199\u8fd9\u4e9b\u5b57\u6bb5\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>3\ufe0f\u20e3 PHP \u8868\u5355\u5904\u7406 &#8211; \u5fc5\u586b\u5b57\u6bb5\u9a8c\u8bc1<\/strong><\/h2>\n\n\n\n<p>\u5373\u4f7f HTML5 \u7684 <code>required<\/code> \u5c5e\u6027\u80fd\u63d0\u4f9b\u5ba2\u6237\u7aef\u9a8c\u8bc1\uff0c\u6211\u4eec\u8fd8\u662f\u9700\u8981\u5728 PHP \u4e2d\u5bf9\u63d0\u4ea4\u7684\u6570\u636e\u8fdb\u884c\u670d\u52a1\u5668\u7aef\u9a8c\u8bc1\uff0c\u4ee5\u9632\u6b62\u7ed5\u8fc7\u5ba2\u6237\u7aef\u9a8c\u8bc1\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a PHP \u793a\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n\/\/ \u68c0\u67e5\u662f\u5426\u901a\u8fc7 POST \u8bf7\u6c42\u63d0\u4ea4\u6570\u636e\nif ($_SERVER&#91;\"REQUEST_METHOD\"] == \"POST\") {\n    \/\/ \u5b9a\u4e49\u53d8\u91cf\u5e76\u521d\u59cb\u5316\u4e3a\u7a7a\n    $name = $email = $message = \"\";\n    $errors = &#91;];\n\n    \/\/ 1\ufe0f\u20e3 \u59d3\u540d\u9a8c\u8bc1\uff08\u5fc5\u586b\uff09\n    if (empty($_POST&#91;\"name\"])) {\n        $errors&#91;] = \"\u59d3\u540d\u662f\u5fc5\u586b\u9879\uff01\";\n    } else {\n        $name = test_input($_POST&#91;\"name\"]);\n    }\n\n    \/\/ 2\ufe0f\u20e3 \u90ae\u7bb1\u9a8c\u8bc1\uff08\u5fc5\u586b\uff09\n    if (empty($_POST&#91;\"email\"])) {\n        $errors&#91;] = \"\u90ae\u7bb1\u662f\u5fc5\u586b\u9879\uff01\";\n    } else {\n        $email = test_input($_POST&#91;\"email\"]);\n        if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {\n            $errors&#91;] = \"\u8bf7\u8f93\u5165\u6709\u6548\u7684\u90ae\u7bb1\u5730\u5740\uff01\";\n        }\n    }\n\n    \/\/ 3\ufe0f\u20e3 \u7559\u8a00\u9a8c\u8bc1\uff08\u5fc5\u586b\uff09\n    if (empty($_POST&#91;\"message\"])) {\n        $errors&#91;] = \"\u7559\u8a00\u662f\u5fc5\u586b\u9879\uff01\";\n    } else {\n        $message = test_input($_POST&#91;\"message\"]);\n    }\n\n    \/\/ 4\ufe0f\u20e3 \u7edf\u4e00\u6570\u636e\u6e05\u7406\u51fd\u6570\n    function test_input($data) {\n        $data = trim($data);             \/\/ \u53bb\u6389\u524d\u540e\u7a7a\u683c\n        $data = stripslashes($data);     \/\/ \u5220\u9664\u53cd\u659c\u6760\n        $data = htmlspecialchars($data); \/\/ \u9632\u6b62 XSS\n        return $data;\n    }\n\n    \/\/ 5\ufe0f\u20e3 \u663e\u793a\u7ed3\u679c\u6216\u9519\u8bef\u4fe1\u606f\n    if (empty($errors)) {\n        echo \"\u2705 \u8868\u5355\u63d0\u4ea4\u6210\u529f\uff01&lt;br&gt;\";\n        echo \"\u59d3\u540d: $name &lt;br&gt;\";\n        echo \"\u90ae\u7bb1: $email &lt;br&gt;\";\n        echo \"\u7559\u8a00: $message &lt;br&gt;\";\n    } else {\n        foreach ($errors as $error) {\n            echo \"\u274c $error &lt;br&gt;\";\n        }\n    }\n}\n?&gt;<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u4ee3\u7801\u89e3\u8bfb\uff1a<\/strong><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u68c0\u67e5 <code>$_SERVER[\"REQUEST_METHOD\"]<\/code><\/strong>\uff1a\u9996\u5148\u68c0\u67e5\u662f\u5426\u901a\u8fc7 <code>POST<\/code> \u65b9\u6cd5\u63d0\u4ea4\u8868\u5355\u6570\u636e\u3002<\/li>\n\n\n\n<li><strong>\u4f7f\u7528 <code>empty()<\/code> \u51fd\u6570\u68c0\u67e5\u5fc5\u586b\u5b57\u6bb5\u662f\u5426\u4e3a\u7a7a<\/strong>\uff1a\u5bf9\u4e8e\u6bcf\u4e2a\u5fc5\u586b\u5b57\u6bb5\uff08<code>name<\/code>\u3001<code>email<\/code> \u548c <code>message<\/code>\uff09\uff0c\u5982\u679c\u7528\u6237\u6ca1\u6709\u586b\u5199\uff0c\u7cfb\u7edf\u4f1a\u8fd4\u56de\u9519\u8bef\u6d88\u606f\u3002<\/li>\n\n\n\n<li><strong>\u6570\u636e\u6e05\u7406\u51fd\u6570 <code>test_input()<\/code><\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li><code>trim()<\/code> \u53bb\u6389\u8f93\u5165\u6570\u636e\u524d\u540e\u7a7a\u683c\u3002<\/li>\n\n\n\n<li><code>stripslashes()<\/code> \u5220\u9664\u53cd\u659c\u6760\uff0c\u9632\u6b62 SQL \u6ce8\u5165\u3002<\/li>\n\n\n\n<li><code>htmlspecialchars()<\/code> \u8f6c\u6362\u7279\u6b8a\u5b57\u7b26\uff0c\u9632\u6b62 XSS \u653b\u51fb\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u663e\u793a\u9a8c\u8bc1\u7ed3\u679c<\/strong>\uff1a\u5982\u679c\u6ca1\u6709\u9519\u8bef\uff0c\u663e\u793a\u7528\u6237\u8f93\u5165\u7684\u6570\u636e\uff1b\u5982\u679c\u6709\u9519\u8bef\uff0c\u5219\u663e\u793a\u5177\u4f53\u7684\u9519\u8bef\u6d88\u606f\u3002<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>4\ufe0f\u20e3 \u5176\u4ed6\u5e38\u89c1\u7684\u9a8c\u8bc1\u65b9\u6cd5<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6570\u5b57\u9a8c\u8bc1<\/strong>\uff1a\u4f7f\u7528 <code>filter_var()<\/code> \u68c0\u67e5\u6570\u5b57\u5b57\u6bb5\u662f\u5426\u4e3a\u6570\u5b57\u3002<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  if (!filter_var($_POST&#91;\"age\"], FILTER_VALIDATE_INT)) {\n      $errors&#91;] = \"\u8bf7\u8f93\u5165\u6709\u6548\u7684\u5e74\u9f84\uff01\";\n  }<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6b63\u5219\u8868\u8fbe\u5f0f\u9a8c\u8bc1<\/strong>\uff1a\u4f7f\u7528 <code>preg_match()<\/code> \u6765\u9a8c\u8bc1\u5b57\u6bb5\u683c\u5f0f\uff08\u5982\u7535\u8bdd\u3001\u90ae\u653f\u7f16\u7801\u7b49\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  if (!preg_match(\"\/^&#91;0-9]{10}$\/\", $_POST&#91;\"phone\"])) {\n      $errors&#91;] = \"\u8bf7\u8f93\u5165\u6709\u6548\u7684\u7535\u8bdd\u53f7\u7801\uff01\";\n  }<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u7a7a\u683c\u9a8c\u8bc1<\/strong>\uff1a\u786e\u4fdd\u7528\u6237\u6ca1\u6709\u4ec5\u8f93\u5165\u7a7a\u683c\u3002<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  if (empty(trim($_POST&#91;\"name\"]))) {\n      $errors&#91;] = \"\u59d3\u540d\u4e0d\u80fd\u4e3a\u7a7a\uff01\";\n  }<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>5\ufe0f\u20e3 \u63d0\u793a\u548c\u6700\u4f73\u5b9e\u8df5<\/strong><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u524d\u7aef\u548c\u540e\u7aef\u9a8c\u8bc1\u7ed3\u5408<\/strong>\uff1a\u5373\u4fbf HTML5 \u63d0\u4f9b\u4e86 <code>required<\/code> \u5c5e\u6027\uff0c\u4e5f\u5e94\u59cb\u7ec8\u5728\u540e\u7aef\u8fdb\u884c\u9a8c\u8bc1\uff0c\u907f\u514d\u7ed5\u8fc7\u5ba2\u6237\u7aef\u9a8c\u8bc1\u7684\u98ce\u9669\u3002<\/li>\n\n\n\n<li><strong>\u7528\u6237\u53cd\u9988<\/strong>\uff1a\u6e05\u6670\u7684\u9519\u8bef\u63d0\u793a\u80fd\u591f\u5e2e\u52a9\u7528\u6237\u5feb\u901f\u4fee\u6b63\u8868\u5355\u3002<\/li>\n\n\n\n<li><strong>\u907f\u514d\u76f4\u63a5\u663e\u793a\u9519\u8bef\u4fe1\u606f<\/strong>\uff1a\u5728\u751f\u4ea7\u73af\u5883\u4e2d\uff0c\u4e0d\u5efa\u8bae\u5c06\u5177\u4f53\u7684\u9519\u8bef\u4fe1\u606f\u76f4\u63a5\u8fd4\u56de\u7ed9\u7528\u6237\uff0c\u53ef\u4ee5\u8bb0\u5f55\u65e5\u5fd7\u5e76\u8fd4\u56de\u4e00\u4e2a\u901a\u7528\u9519\u8bef\u6d88\u606f\u3002<\/li>\n\n\n\n<li><strong>\u6570\u636e\u6e05\u7406<\/strong>\uff1a\u786e\u4fdd\u901a\u8fc7 <code>test_input()<\/code> \u7b49\u65b9\u6cd5\u6e05\u7406\u6570\u636e\uff0c\u4ee5\u9632\u6b62\u6076\u610f\u8f93\u5165\u3002<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>6\ufe0f\u20e3 \u603b\u7ed3<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th><strong>\u5b57\u6bb5<\/strong><\/th><th><strong>\u9a8c\u8bc1\u65b9\u5f0f<\/strong><\/th><\/tr><\/thead><tbody><tr><td>\u59d3\u540d<\/td><td>\u5fc5\u586b\uff0c<code>empty()<\/code> \u68c0\u67e5<\/td><\/tr><tr><td>\u90ae\u7bb1<\/td><td>\u5fc5\u586b\uff0c<code>filter_var()<\/code><\/td><\/tr><tr><td>\u7559\u8a00<\/td><td>\u5fc5\u586b\uff0c<code>empty()<\/code> \u68c0\u67e5<\/td><\/tr><tr><td>\u6570\u5b57<\/td><td><code>filter_var()<\/code><\/td><\/tr><tr><td>\u6b63\u5219\u9a8c\u8bc1<\/td><td><code>preg_match()<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\ud83d\udccc <strong>\u63a8\u8350\u9605\u8bfb\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.php.net\/manual\/zh\/tutorial.forms.php\">PHP \u5b98\u65b9\u8868\u5355\u9a8c\u8bc1\u6587\u6863<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.php.net\/manual\/zh\/function.filter-var.php\">PHP filter_var() \u624b\u518c<\/a><\/li>\n<\/ul>\n\n\n\n<p>\u901a\u8fc7\u6709\u6548\u7684\u5fc5\u9700\u5b57\u6bb5\u9a8c\u8bc1\uff0c\u4f60\u80fd\u786e\u4fdd\u8868\u5355\u6570\u636e\u7684\u5b8c\u6574\u6027\u548c\u5b89\u5168\u6027\uff0c\u4fdd\u62a4\u4f60\u7684\u5e94\u7528\u514d\u53d7\u6f5c\u5728\u7684\u6076\u610f\u653b\u51fb\u3002\u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 Web \u5f00\u53d1\u4e2d\uff0c\u8868\u5355\u7684\u5fc5\u9700\u5b57\u6bb5\u9a8c\u8bc1\u662f\u786e\u4fdd\u7528\u6237\u8f93\u5165\u5fc5\u586b\u4fe1\u606f\u7684\u5e38\u89c1\u64cd\u4f5c\u3002\u901a\u8fc7\u9a8c\u8bc1\u7528\u6237\u662f\u5426\u586b\u5199\u4e86\u8fd9\u4e9b\u5fc5\u8981\u5b57\u6bb5\uff0c\u53ef [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3016,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[80],"tags":[],"class_list":["post-3015","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-php"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3015","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=3015"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3015\/revisions"}],"predecessor-version":[{"id":3017,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3015\/revisions\/3017"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media\/3016"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=3015"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=3015"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=3015"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}