{"id":3060,"date":"2025-03-21T00:03:39","date_gmt":"2025-03-20T16:03:39","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=3060"},"modified":"2025-03-21T00:03:39","modified_gmt":"2025-03-20T16:03:39","slug":"php-%e5%ae%89%e5%85%a8%e7%94%b5%e5%ad%90%e9%82%ae%e4%bb%b6%e5%8f%91%e9%80%81%e6%8c%87%e5%8d%97","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/03\/21\/php-%e5%ae%89%e5%85%a8%e7%94%b5%e5%ad%90%e9%82%ae%e4%bb%b6%e5%8f%91%e9%80%81%e6%8c%87%e5%8d%97\/","title":{"rendered":"PHP \u5b89\u5168\u7535\u5b50\u90ae\u4ef6\u53d1\u9001\u6307\u5357"},"content":{"rendered":"\n

\u5728 PHP \u4e2d\u53d1\u9001\u7535\u5b50\u90ae\u4ef6\u65f6\uff0c\u5b89\u5168\u6027\u662f\u4e00\u4e2a\u91cd\u8981\u7684\u8003\u91cf\u56e0\u7d20\u3002\u4e3a\u4e86\u9632\u6b62\u90ae\u4ef6\u88ab\u62e6\u622a\u3001\u4f2a\u9020\u6216\u88ab\u7528\u4e8e\u6076\u610f\u76ee\u7684\uff0c\u9700\u8981\u91c7\u7528\u4e00\u4e9b\u5b89\u5168\u63aa\u65bd\u3002\u672c\u6587\u5c06\u4ecb\u7ecd PHP \u53d1\u9001\u5b89\u5168\u7535\u5b50\u90ae\u4ef6\u7684\u6700\u4f73\u5b9e\u8df5\uff0c\u5305\u62ec \u9632\u6b62\u4f2a\u9020\u3001\u9632\u6b62\u5783\u573e\u90ae\u4ef6\u3001\u4f7f\u7528\u52a0\u5bc6\u534f\u8bae\u3001\u5b89\u5168\u5b58\u50a8\u51ed\u636e<\/strong> \u4ee5\u53ca \u9632\u6b62\u90ae\u4ef6\u5934\u6ce8\u5165<\/strong> \u7b49\u5185\u5bb9\u3002<\/p>\n\n\n\n

\n\n\n\n

1. \u907f\u514d\u90ae\u4ef6\u5934\u6ce8\u5165\u653b\u51fb<\/strong><\/h2>\n\n\n\n

\u90ae\u4ef6\u5934\u6ce8\u5165\uff08Email Header Injection\uff09\u662f\u4e00\u79cd\u653b\u51fb\u65b9\u5f0f\uff0c\u653b\u51fb\u8005\u53ef\u4ee5\u901a\u8fc7\u672a\u8fc7\u6ee4\u7684\u7528\u6237\u8f93\u5165\uff0c\u5728 mail()<\/code> \u51fd\u6570\u7684 headers<\/code> \u53c2\u6570\u4e2d\u63d2\u5165\u989d\u5916\u7684\u90ae\u4ef6\u5934\uff0c\u4ece\u800c\u53d1\u9001\u5783\u573e\u90ae\u4ef6\u6216\u8fdb\u884c\u9493\u9c7c\u653b\u51fb\u3002<\/p>\n\n\n\n

\u4e0d\u5b89\u5168\u4ee3\u7801\u793a\u4f8b<\/strong><\/h3>\n\n\n\n
$to = $_POST['email']; \/\/ \u7528\u6237\u63d0\u4f9b\u7684\u90ae\u7bb1\uff08\u4e0d\u5b89\u5168\uff09\n$subject = \"\u6b22\u8fce\u90ae\u4ef6\";\n$message = \"\u6b22\u8fce\u6ce8\u518c\uff01\";\n$headers = \"From: admin@example.com\\r\\n\";\n$headers .= \"Reply-To: admin@example.com\\r\\n\";\n$headers .= \"CC: \" . $_POST['cc'] . \"\\r\\n\"; \/\/ \u7528\u6237\u8f93\u5165\uff08\u4e0d\u5b89\u5168\uff09\n\nmail($to, $subject, $message, $headers);<\/code><\/pre>\n\n\n\n
\u95ee\u9898\uff1a<\/strong><\/p>\n\n\n\n
    \n
  • $_POST['email']<\/code> \u548c $_POST['cc']<\/code> \u53ef\u80fd\u88ab\u6076\u610f\u7528\u6237\u63d2\u5165\u6362\u884c\u7b26<\/strong>\uff0c\u4ece\u800c\u6dfb\u52a0\u989d\u5916\u7684 CC<\/code>\u3001BCC<\/code> \u6216 To<\/code> \u5b57\u6bb5\uff0c\u5bfc\u81f4\u5783\u573e\u90ae\u4ef6\u653b\u51fb\u3002<\/li>\n<\/ul>\n\n\n\n
    \u5b89\u5168\u89e3\u51b3\u65b9\u6848<\/strong><\/h3>\n\n\n\n
      \n
    • \u9a8c\u8bc1\u90ae\u7bb1\u683c\u5f0f<\/strong><\/li>\n\n\n\n
    • \u79fb\u9664\u6362\u884c\u7b26<\/strong><\/li>\n\n\n\n
    • \u4f7f\u7528 filter_var()<\/code> \u8fc7\u6ee4\u8f93\u5165<\/strong><\/li>\n<\/ul>\n\n\n\n
      \u5b89\u5168\u4ee3\u7801\u793a\u4f8b\uff1a<\/strong><\/p>\n\n\n\n
      $to = filter_var($_POST['email'], FILTER_VALIDATE_EMAIL);\n$cc = filter_var($_POST['cc'], FILTER_VALIDATE_EMAIL);\n\nif ($to && $cc) {\n    $subject = \"\u6b22\u8fce\u90ae\u4ef6\";\n    $message = \"\u6b22\u8fce\u6ce8\u518c\uff01\";\n    $headers = \"From: admin@example.com\\r\\n\";\n    $headers .= \"Reply-To: admin@example.com\\r\\n\";\n    $headers .= \"CC: \" . $cc . \"\\r\\n\";\n\n    mail($to, $subject, $message, $headers);\n}<\/code><\/pre>\n\n\n\n
      \n\n\n\n
      2. \u4f7f\u7528 SMTP \u4ee3\u66ff mail()<\/code><\/strong><\/h2>\n\n\n\n
      PHP \u5185\u7f6e\u7684 mail()<\/code> \u4e0d\u652f\u6301\u8eab\u4efd\u9a8c\u8bc1\u548c\u52a0\u5bc6<\/strong>\uff0c\u5bb9\u6613\u88ab\u5783\u573e\u90ae\u4ef6\u8fc7\u6ee4\u3002\u63a8\u8350\u4f7f\u7528 SMTP + TLS\/SSL<\/strong>\uff0c\u4f8b\u5982 PHPMailer<\/code> \u6216 SwiftMailer<\/code>\u3002<\/p>\n\n\n\n
      PHPMailer \u53d1\u9001\u5b89\u5168\u7535\u5b50\u90ae\u4ef6<\/strong><\/h3>\n\n\n\n
      \u5b89\u88c5 PHPMailer<\/strong><\/p>\n\n\n\n
      composer require phpmailer\/phpmailer<\/code><\/pre>\n\n\n\n
      SMTP \u65b9\u5f0f\u53d1\u9001\u90ae\u4ef6\uff08\u652f\u6301 TLS\/SSL \u52a0\u5bc6\uff09\uff1a<\/strong><\/p>\n\n\n\n
      use PHPMailer\\PHPMailer\\PHPMailer;\nuse PHPMailer\\PHPMailer\\Exception;\n\nrequire 'vendor\/autoload.php';\n\n$mail = new PHPMailer(true);\n\ntry {\n    $mail->isSMTP();\n    $mail->Host       = 'smtp.example.com'; \/\/ \u4f60\u7684 SMTP \u670d\u52a1\u5668\n    $mail->SMTPAuth   = true;\n    $mail->Username   = 'your-email@example.com'; \/\/ SMTP \u7528\u6237\u540d\n    $mail->Password   = 'your-email-password'; \/\/ SMTP \u5bc6\u7801\n    $mail->SMTPSecure = PHPMailer::ENCRYPTION_STARTTLS; \/\/ \u52a0\u5bc6\u65b9\u5f0f (TLS)\n    $mail->Port       = 587; \/\/ SMTP \u7aef\u53e3 (TLS: 587, SSL: 465)\n\n    \/\/ \u53d1\u4ef6\u4eba\n    $mail->setFrom('your-email@example.com', 'Your Name');\n    $mail->addAddress('recipient@example.com', 'Recipient Name');\n\n    \/\/ \u90ae\u4ef6\u5185\u5bb9\n    $mail->isHTML(true);\n    $mail->Subject = '\u5b89\u5168\u90ae\u4ef6\u793a\u4f8b';\n    $mail->Body    = '<p>\u8fd9\u662f\u4e00\u5c01\u5b89\u5168\u7684\u6d4b\u8bd5\u90ae\u4ef6\u3002<\/p>';\n    $mail->AltBody = '\u8fd9\u662f\u4e00\u5c01\u5b89\u5168\u7684\u6d4b\u8bd5\u90ae\u4ef6\u3002';\n\n    $mail->send();\n    echo '\u90ae\u4ef6\u5df2\u53d1\u9001';\n} catch (Exception $e) {\n    echo \"\u90ae\u4ef6\u53d1\u9001\u5931\u8d25: {$mail->ErrorInfo}\";\n}<\/code><\/pre>\n\n\n\n
      SMTP \u5b89\u5168\u6027<\/strong><\/h3>\n\n\n\n
        \n
      • \u907f\u514d\u5b58\u50a8 SMTP \u51ed\u636e\u5728\u4ee3\u7801\u4e2d<\/strong>\uff0c\u53ef\u4f7f\u7528 .env<\/code> \u6216\u73af\u5883\u53d8\u91cf\uff1a<\/li>\n<\/ul>\n\n\n\n
          putenv(\"SMTP_USERNAME=your-email@example.com\");\n  putenv(\"SMTP_PASSWORD=your-email-password\");\n  $mail->Username = getenv(\"SMTP_USERNAME\");\n  $mail->Password = getenv(\"SMTP_PASSWORD\");<\/code><\/pre>\n\n\n\n
          \n
        • \u542f\u7528 SPF\u3001DKIM\u3001DMARC \u8bb0\u5f55<\/strong>\uff0c\u9632\u6b62\u90ae\u4ef6\u88ab\u6807\u8bb0\u4e3a\u5783\u573e\u90ae\u4ef6\uff08\u89c1\u7b2c 4 \u90e8\u5206\uff09\u3002<\/li>\n<\/ul>\n\n\n\n
          \n\n\n\n
          3. \u53d1\u9001\u52a0\u5bc6\u90ae\u4ef6<\/strong><\/h2>\n\n\n\n
          \u4e3a\u4e86\u4fdd\u62a4\u90ae\u4ef6\u5185\u5bb9\u7684\u9690\u79c1\uff0c\u53ef\u4ee5\u4f7f\u7528 OpenPGP\uff08PGP \u52a0\u5bc6\uff09<\/strong> \u6216 S\/MIME \u52a0\u5bc6<\/strong>\u3002<\/p>\n\n\n\n
          \u4f7f\u7528 PHPMailer<\/code> \u53d1\u9001 PGP \u52a0\u5bc6\u90ae\u4ef6<\/strong><\/h3>\n\n\n\n
          $mail->Body = openssl_encrypt('\u8fd9\u662f\u4e00\u5c01\u52a0\u5bc6\u90ae\u4ef6', 'AES-256-CBC', 'your-secret-key', 0, 'your-iv');<\/code><\/pre>\n\n\n\n
          \u6b64\u65b9\u6cd5\u53ef\u4ee5\u52a0\u5bc6\u90ae\u4ef6\u6b63\u6587\uff0c\u63a5\u6536\u65b9\u9700\u89e3\u5bc6\u540e\u9605\u8bfb\u3002<\/p>\n\n\n\n
          \n\n\n\n
          4. \u4fdd\u62a4\u90ae\u4ef6\u4e0d\u88ab\u5783\u573e\u90ae\u4ef6\u8fc7\u6ee4<\/strong><\/h2>\n\n\n\n
          \u8bb8\u591a\u90ae\u4ef6\u88ab\u8bef\u5224\u4e3a\u5783\u573e\u90ae\u4ef6\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5 \u63d0\u9ad8\u9001\u8fbe\u7387<\/strong>\uff1a<\/p>\n\n\n\n
          (1) \u914d\u7f6e SPF \u8bb0\u5f55<\/strong><\/h3>\n\n\n\n
          SPF\uff08Sender Policy Framework\uff09<\/strong> \u5141\u8bb8\u7ba1\u7406\u5458\u6307\u5b9a\u54ea\u4e9b\u90ae\u4ef6\u670d\u52a1\u5668\u6709\u6743\u9650\u4ee3\u8868\u4f60\u7684\u57df\u53d1\u9001\u90ae\u4ef6\u3002<\/p>\n\n\n\n
          \ud83d\udccc \u793a\u4f8b SPF \u8bb0\u5f55\uff08DNS TXT \u8bb0\u5f55\uff09\uff1a<\/strong><\/p>\n\n\n\n
          v=spf1 include:_spf.example.com ~all<\/code><\/pre>\n\n\n\n
          \n
          ~all<\/code> \u8868\u793a\u8f6f\u5931\u8d25\uff08SoftFail\uff09\uff0c-all<\/code> \u8868\u793a\u786c\u5931\u8d25\uff08HardFail\uff09\u3002<\/p>\n<\/blockquote>\n\n\n\n
          (2) \u914d\u7f6e DKIM \u8bb0\u5f55<\/strong><\/h3>\n\n\n\n
          DKIM\uff08DomainKeys Identified Mail\uff09\u7528\u4e8e \u6570\u5b57\u7b7e\u540d\u90ae\u4ef6<\/strong>\uff0c\u786e\u4fdd\u90ae\u4ef6\u5185\u5bb9\u672a\u88ab\u7be1\u6539\u3002<\/p>\n\n\n\n
          \ud83d\udccc \u793a\u4f8b DKIM \u8bb0\u5f55\uff08DNS TXT \u8bb0\u5f55\uff09\uff1a<\/strong><\/p>\n\n\n\n
          default._domainkey.example.com IN TXT \"v=DKIM1; k=rsa; p=MIGfMA0GCS...\"<\/code><\/pre>\n\n\n\n
          \u914d\u7f6e\u540e\uff0c\u9700\u8981\u5728 \u90ae\u4ef6\u5934<\/strong> \u6dfb\u52a0 DKIM \u7b7e\u540d\uff1a<\/p>\n\n\n\n
          $mail->DKIM_domain = 'example.com';\n$mail->DKIM_selector = 'default';\n$mail->DKIM_private = '\/path\/to\/private.key';\n$mail->DKIM_passphrase = '';<\/code><\/pre>\n\n\n\n
          (3) \u914d\u7f6e DMARC \u8bb0\u5f55<\/strong><\/h3>\n\n\n\n
          DMARC\uff08Domain-based Message Authentication, Reporting & Conformance\uff09\u7ed3\u5408 SPF \u548c DKIM \u8fdb\u4e00\u6b65\u52a0\u5f3a\u90ae\u4ef6\u5b89\u5168\u3002<\/p>\n\n\n\n
          \ud83d\udccc \u793a\u4f8b DMARC \u8bb0\u5f55\uff08DNS TXT \u8bb0\u5f55\uff09\uff1a<\/strong><\/p>\n\n\n\n
          _dmarc.example.com IN TXT \"v=DMARC1; p=reject; rua=mailto:report@example.com\"<\/code><\/pre>\n\n\n\n
          p=reject<\/code><\/strong> \u8868\u793a\u62d2\u7edd\u6240\u6709\u672a\u901a\u8fc7\u9a8c\u8bc1\u7684\u90ae\u4ef6\u3002<\/p>\n\n\n\n
          \n\n\n\n
          5. \u53d1\u9001\u5b89\u5168\u9644\u4ef6<\/strong><\/h2>\n\n\n\n
          \u653b\u51fb\u8005\u53ef\u80fd\u5229\u7528\u90ae\u4ef6\u9644\u4ef6\u4f20\u64ad\u75c5\u6bd2\u6216\u6076\u610f\u8f6f\u4ef6\u3002\u56e0\u6b64\uff1a<\/p>\n\n\n\n
            \n
          • \u907f\u514d\u53d1\u9001 .exe<\/code>\u3001.bat<\/code>\u3001.js<\/code> \u7b49\u53ef\u6267\u884c\u6587\u4ef6<\/strong><\/li>\n\n\n\n
          • \u4f7f\u7528 PHPMailer<\/code> \u8fdb\u884c MIME \u7c7b\u578b\u68c0\u6d4b<\/strong><\/li>\n<\/ul>\n\n\n\n
            \u793a\u4f8b\uff08\u53d1\u9001 PDF \u9644\u4ef6\uff09<\/strong><\/h3>\n\n\n\n
            $mail->addAttachment('\/path\/to\/document.pdf', '\u5b89\u5168\u6587\u6863.pdf');<\/code><\/pre>\n\n\n\n
            \n\n\n\n
            6. \u53d1\u9001\u5b89\u5168 HTML \u90ae\u4ef6<\/strong><\/h2>\n\n\n\n
            \u90ae\u4ef6\u5185\u5bb9\u5e94\u907f\u514d\uff1a<\/p>\n\n\n\n
              \n
            • \u672a\u8f6c\u4e49\u7684\u7528\u6237\u8f93\u5165<\/strong><\/li>\n\n\n\n
            • \u5d4c\u5165 JavaScript<\/strong><\/li>\n\n\n\n
            • \u5916\u90e8\u52a0\u8f7d\u4e0d\u53ef\u4fe1\u4efb\u8d44\u6e90<\/strong><\/li>\n<\/ul>\n\n\n\n
              \u5b89\u5168 HTML \u90ae\u4ef6\u793a\u4f8b<\/strong><\/h3>\n\n\n\n
              $mail->Body = htmlspecialchars('<h1>\u6b22\u8fce<\/h1><p>\u8fd9\u662f\u4e00\u5c01\u5b89\u5168\u90ae\u4ef6\u3002<\/p>');<\/code><\/pre>\n\n\n\n
              \n
              \u4f7f\u7528 htmlspecialchars()<\/code> \u9632\u6b62 HTML \u6ce8\u5165\u653b\u51fb\u3002<\/p>\n<\/blockquote>\n\n\n\n
              \n\n\n\n
              \u603b\u7ed3<\/strong><\/h2>\n\n\n\n
              \u5b89\u5168\u63aa\u65bd<\/th>\u65b9\u6848<\/th><\/tr><\/thead>
              \u9632\u6b62\u90ae\u4ef6\u5934\u6ce8\u5165<\/td>\u8fc7\u6ee4\u8f93\u5165 (filter_var()<\/code>)<\/td><\/tr>
              \u5b89\u5168\u8eab\u4efd\u9a8c\u8bc1<\/td>\u4f7f\u7528 SMTP (PHPMailer<\/code>\u3001SwiftMailer<\/code>)<\/td><\/tr>
              \u9632\u6b62\u5783\u573e\u90ae\u4ef6<\/td>SPF\u3001DKIM\u3001DMARC<\/td><\/tr>
              \u53d1\u9001\u52a0\u5bc6\u90ae\u4ef6<\/td>PGP\/S-MIME \u52a0\u5bc6<\/td><\/tr>
              \u9644\u4ef6\u5b89\u5168<\/td>\u7981\u6b62\u53ef\u6267\u884c\u6587\u4ef6<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
              \u63a8\u8350\u4f7f\u7528 PHPMailer<\/code> + SMTP<\/code> + SPF\/DKIM\/DMARC<\/code> \u6765\u786e\u4fdd\u90ae\u4ef6\u5b89\u5168\uff01<\/strong><\/p>\n\n\n\n
              \u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
              \u5728 PHP \u4e2d\u53d1\u9001\u7535\u5b50\u90ae\u4ef6\u65f6\uff0c\u5b89\u5168\u6027\u662f\u4e00\u4e2a\u91cd\u8981\u7684\u8003\u91cf\u56e0\u7d20\u3002\u4e3a\u4e86\u9632\u6b62\u90ae\u4ef6\u88ab\u62e6\u622a\u3001\u4f2a\u9020\u6216\u88ab\u7528\u4e8e\u6076\u610f\u76ee\u7684\uff0c\u9700\u8981\u91c7\u7528\u4e00 […]<\/p>\n","protected":false},"author":1,"featured_media":3061,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[80],"tags":[],"class_list":["post-3060","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\/3060","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=3060"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3060\/revisions"}],"predecessor-version":[{"id":3062,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3060\/revisions\/3062"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media\/3061"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=3060"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=3060"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=3060"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}