防止外链影响自己WordPress博客的权重，导致搜索引擎降权，可以给网站加一个外链Go跳转效果。本文的内容介绍如何使用代码实现外链跳转。包括外链跳转的页面样式以及自动识别博文中的外链。
设计外链跳转页面
在WordPress的根目录（与wp-admin文件夹同级）下新建一个go文件夹，在里面新建一个go.php：
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<?php /** * Created by PhpStorm. * User: Flyzy * Date: 2018/1/14 * Time: 19:59 */ $t_url = preg_replace( '/^url=(.*)$/i', '$1', $_SERVER["QUERY_STRING"] ); if ( ! empty( $t_url ) ) { preg_match( '/(http|https):\/\//', $t_url, $matches ); if ( $matches ) { $url = $t_url; $title = '页面加载中,请稍候...'; } else { preg_match( '/\./i', $t_url, $matche ); if ( $matche ) { $url = 'http://' . $t_url; $title = '页面加载中,请稍候...'; } else { $url = 'https://www.flyzy2005.com'; $title = '参数错误，正在返回首页...'; } } } else { $title = '参数缺失，正在返回首页...'; $url = 'https://www.flyzy2005.com'; } ?> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <meta http-equiv="refresh" content="1;url='<?php echo $url; ?>';"> <title><?php echo $title; ?></title> <style> body { background: #000 } .loading { -webkit-animation: fadein 2s; -moz-animation: fadein 2s; -o-animation: fadein 2s; animation: fadein 2s } @-moz-keyframes fadein { from { opacity: 0 } to { opacity: 1 } } @-webkit-keyframes fadein { from { opacity: 0 } to { opacity: 1 } } @-o-keyframes fadein { from { opacity: 0 } to { opacity: 1 } } @keyframes fadein { from { opacity: 0 } to { opacity: 1 } } .spinner-wrapper { position: absolute; top: 0; left: 0; z-index: 300; height: 100%; min-width: 100%; min-height: 100%; background: rgba(255, 255, 255, 0.93) } .spinner-text { position: absolute; top: 50%; left: 50%; margin-left: -90px; margin-top: 2px; color: #BBB; letter-spacing: 1px; font-weight: 700; font-size: 36px; font-family: Arial } .spinner { position: absolute; top: 50%; left: 50%; display: block; margin-left: -160px; width: 1px; height: 1px; border: 25px solid rgba(100, 100, 100, 0.2); -webkit-border-radius: 50px; -moz-border-radius: 50px; border-radius: 50px; border-left-color: transparent; border-right-color: transparent; -webkit-animation: spin 1.5s infinite; -moz-animation: spin 1.5s infinite; animation: spin 1.5s infinite } @-webkit-keyframes spin { 0%, 100% { -webkit-transform: rotate(0deg) scale(1) } 50% { -webkit-transform: rotate(720deg) scale(0.6) } } @-moz-keyframes spin { 0%, 100% { -moz-transform: rotate(0deg) scale(1) } 50% { -moz-transform: rotate(720deg) scale(0.6) } } @-o-keyframes spin { 0%, 100% { -o-transform: rotate(0deg) scale(1) } 50% { -o-transform: rotate(720deg) scale(0.6) } } @keyframes spin { 0%, 100% { transform: rotate(0deg) scale(1) } 50% { transform: rotate(720deg) scale(0.6) } } </style> </head> <body> <div class="loading"> <div class="spinner-wrapper"> <span class="spinner-text">页面加载中,请稍候...</span> <span class="spinner"></span> </div> </div> </body> </html> |
博文中外链自动识别
在functions.php中加入如下代码，自动进行外链替换：
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add_filter('the_content','the_content_nofollow',999); function the_content_nofollow($content) { preg_match_all('/<a(.*?)href="(.*?)"(.*?)>/',$content,$matches); if($matches){ foreach($matches[2] as $val){ if(strpos($val,'://')!==false && strpos($val,home_url())===false && !preg_match('/\.(jpg|jepg|png|ico|bmp|gif|tiff)/i',$val)){ $content=str_replace("href=\"$val\"", "href=\"".home_url()."/go/go.php?url=$val\" ",$content); } } } return $content; } |
至此，你已经完成了博文中外链自动增加跳转效果的功能~具体效果如下：
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