WordPress无插件外链转内链代码

1、在functions.php添加以下代码

/*
*自动给文章的外部链接添加nofollow属性
*/ 
add_filter('the_content','web589_the_content_nofollow',999);
function web589_the_content_nofollow($content){
 preg_match_all('/href="(http.*?)"/',$content,$matches);
 if($matches){
 foreach($matches[1] as $val){
 if( strpos($val,home_url())===false ) 
 $content=str_replace("href=\"$val\"", "rel=\"nofollow\" href=\"" . get_bloginfo('wpurl'). "/go?url=" .base64_encode($val). "\"",$content);
 }
 }
 return $content;
}
// 自动给文章的外部链接添加nofollow属性

2、在网站根目录下建立go文件夹
注意是网站的根目录,不是主题的根目录。建立index.php文件,复制以下代码

<?php 
$url = $_GET['url'];
$a = '';
if( $a==$url ) {
 $b = "http://www.511yj.com/";
// echo 'true';
} else {
 $b = $url;
 $b = base64_decode($b);
}
//Template Name:链接跳转(有过度)
?>
 
<html>
<head>
<meta charset=utf-8 />
<meta name="robots" content="nofollow">
<meta http-equiv="refresh" content="0.1;url=<?php echo $b; ?>">
<title>正在为您跳转……</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:41.5%;left:47%;margin:16px 0 0 35px;color:#BBB;letter-spacing:1px;font-weight:700;font-size:9px;font-family:Arial}.spinner{position:absolute;top:40%;left:45%;display:block;margin:0;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">加载中...</span>
<span class="spinner"></span>
</div
></div>
</body>
</html>

$b = "http://www.511yj.com/";换成你的网址。以上技术来自网络,已经测试没有问题--).

以上代码增加了跳转美化效果,代码中已经用 base64 将源链接加密,并且加上了 nofollow,但恐怕蜘蛛还是能爬行,在 Robot s 禁止所有蜘蛛爬行 /go?url 目录!

Disallow: /go/
Disallow: /go?url

建议你阅读:
1、深入解读robots优化wordpress
2、优化Robots.txt提升你的WordPress收录
3、基于WordPress站点构建正确的robots.txt


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