WordPress如何将外链转内链?文章外链自动转成内链代码

WordPress如何将外链转内链?

文章外链自动转成内链代码

有时候我们因为做谷歌SEO排名,在WordPress网站分享一些被中国网络封锁的海外网站或论坛,这样的链接有被墙风险。

所以,我们要将文章中某些外链自动转换成内链。

外链转成内链优势

第 1 步:上传文件到网站根目录

WordPress文章外链自动转成内链的代码,有2个版本:

  1. PHP版本
  2. JS版本

PHP版本

将以下 PHP 代码保存为 go.php 并上传到网站根目录。

<?
php
if(strlen($_SERVER['REQUEST_URI']) > 255 ||
 strpos($_SERVER['REQUEST_URI'], "eval(") ||
 strpos($_SERVER['REQUEST_URI'], "base64")) {
 @header("HTTP/1.1 414 Request-URI Too Long");
 @header("Status: 414 Request-URI Too Long");
 @header("Connection: Close");
 @exit;
}
//通过QUERY_STRING取得完整的传入数据,然后取得url=之后的所有值,兼容性更好
$t_url = preg_replace('/^url=(.*)$/i','$1',$_SERVER["QUERY_STRING"]);
//此处可以自定义一些特别的外链,不需要可以删除以下5行
if($t_url=="chenweiliang" ) {
 $t_url="https://www.chenweiliang.com/";
} elseif($t_url=="etufo") {
 $t_url="https://www.etufo.org/";
}
//数据处理
if(!empty($t_url)) {
 //判断取值是否加密
 if ($t_url == base64_encode(base64_decode($t_url))) {
 $t_url = base64_decode($t_url);
 }
 //对取值进行网址校验和判断
 preg_match('/^(http|https|thunder|qqdl|ed2k|Flashget|qbrowser):\/\//i',$t_url,$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 {
 $url = 'http://'.$_SERVER['HTTP_HOST'];
 $title='参数错误,正在返回首页...';
 }
 }
} else {
 $title = '参数缺失,正在返回首页...';
 $url = 'http://'.$_SERVER['HTTP_HOST'];
}
?>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta name="robots" content="noindex, nofollow" />
<noscript><meta http-equiv="refresh" content="1;url='<?php%20echo%20$url;?>';"></noscript>
<script>
function link_jump()
{
 //禁止其他网站使用我们的跳转页面
 var MyHOST = new RegExp("<?php echo $_SERVER['HTTP_HOST']; ?>");
 if (!MyHOST.test(document.referrer)) {
 location.href="http://" + MyHOST;
 }
 location.href="<?php%20echo%20$url;?>";
}
//延时1S跳转,可自行修改延时时间
setTimeout(link_jump, 1000);
//延时50S关闭跳转页面,用于文件下载后不会关闭跳转页的问题
setTimeout(function(){window.opener=null;window.close();}, 50000);
</script>
<title><?php echo $title;?></title>
<style type="text/css">
body{background:#555}.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:45%;left:50%;margin-left:-100px;margin-top:2px;color:#000;letter-spacing:1px;font-size:20px;font-family:Arial}.spinner{position:absolute;top:45%;left:50%;display:block;margin-left:-160px;width:1px;height:1px;border:20px solid rgba(255,0,0,1);-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>

JS版本

将以下 JS 代码保存为 go.html 并上传到网站根目录。

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta name="robots" content="noindex, nofollow" />
<script>
//base64加密解密函数
var base64EncodeChars="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";var base64DecodeChars=new Array(-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,62,-1,-1,-1,63,52,53,54,55,56,57,58,59,60,61,-1,-1,-1,-1,-1,-1,-1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,-1,-1,-1,-1,-1,-1,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,-1,-1,-1,-1,-1);function base64encode(str){var out,i,len;var c1,c2,c3;len=str.length;i=0;out="";while(i<len){c1=str.charCodeAt(i++)&255;if(i==len){out+=base64EncodeChars.charAt(c1>>2);out+=base64EncodeChars.charAt((c1&3)<<4);out+="==";break}c2=str.charCodeAt(i++);if(i==len){out+=base64EncodeChars.charAt(c1>>2);out+=base64EncodeChars.charAt(((c1&3)<<4)|((c2&240)>>4));out+=base64EncodeChars.charAt((c2&15)<<2);out+="=";break}c3=str.charCodeAt(i++);out+=base64EncodeChars.charAt(c1>>2);out+=base64EncodeChars.charAt(((c1&3)<<4)|((c2&240)>>4));out+=base64EncodeChars.charAt(((c2&15)<<2)|((c3&192)>>6));out+=base64EncodeChars.charAt(c3&63)}return out}function base64decode(str){var c1,c2,c3,c4;var i,len,out;len=str.length;i=0;out="";while(i<len){do{c1=base64DecodeChars[str.charCodeAt(i++)&255]}while(i<len&&c1==-1);if(c1==-1){break}do{c2=base64DecodeChars[str.charCodeAt(i++)&255]}while(i<len&&c2==-1);if(c2==-1){break}out+=String.fromCharCode((c1<<2)|((c2&48)>>4));do{c3=str.charCodeAt(i++)&255;if(c3==61){return out}c3=base64DecodeChars[c3]}while(i<len&&c3==-1);if(c3==-1){break}out+=String.fromCharCode(((c2&15)<<4)|((c3&60)>>2));do{c4=str.charCodeAt(i++)&255;if(c4==61){return out}c4=base64DecodeChars[c4]}while(i<len&&c4==-1);if(c4==-1){break}out+=String.fromCharCode(((c3&3)<<6)|c4)}return out}function utf16to8(str){var out,i,len,c;out="";len=str.length;for(i=0;i<len;i++){c=str.charCodeAt(i);if((c>=1)&&(c<=127)){out+=str.charAt(i)}else{if(c>2047){out+=String.fromCharCode(224|((c>>12)&15));out+=String.fromCharCode(128|((c>>6)&63));out+=String.fromCharCode(128|((c>>0)&63))}else{out+=String.fromCharCode(192|((c>>6)&31));out+=String.fromCharCode(128|((c>>0)&63))}}}return out}function utf8to16(str){var out,i,len,c;var char2,char3;out="";len=str.length;i=0;while(i<len){c=str.charCodeAt(i++);switch(c>>4){case 0:case 1:case 2:case 3:case 4:case 5:case 6:case 7:out+=str.charAt(i-1);break;case 12:case 13:char2=str.charCodeAt(i++);out+=String.fromCharCode(((c&31)<<6)|(char2&63));break;case 14:char2=str.charCodeAt(i++);char3=str.charCodeAt(i++);out+=String.fromCharCode(((c&15)<<12)|((char2&63)<<6)|((char3&63)<<0));break}}return out}function doit(){var f=document.f;f.output.value=base64encode(utf16to8(f.source.value));f.decode.value=utf8to16(base64decode(f.output.value))};
//获取请求参数,支持伪静态
function GetQueryString(name)
{
 var reg = new RegExp("(^|&)"+ name +"=(.*)$");
 var r = window.location.search.substr(1).match(reg);
 if(r!=null) {
 return unescape(r[2]);
 } else {
 return window.location.pathname.replace('/go/',''); //注意代码中的/goto/和跳转地址/goto/保持一致,请记得自行修改!
 }
}
var jump_url = GetQueryString("url");
//若传入的是base加密数据,则进行解密处理
if( jump_url==base64encode(base64decode(jump_url))) {
 jump_url = base64decode(jump_url);
}
//url简单正则
var UrlReg = "^((http|https|thunder|qqdl|ed2k|Flashget|qbrowser|ftp|rtsp|mms)://)";
//自定义一些跳转字符串,请根据实际需求自行发挥
if(jump_url=="chenweiliang") {
 var jump_url="https://www.chenweiliang.com/";
}
if(jump_url=="etufo") {
 var jump_url="https://www.etufo.org/";
}
//网址校验
if(jump_url == null || jump_url.toString().length<1 || !jump_url.match(UrlReg)) {
 document.title = '参数错误,正在返回首页...';
 jump_url = location.origin;
}
//延时执行跳转
setTimeout(
function link_jump()
{
//非本站域名不允许使用此跳转页面,请自行修改chenweiliang.com为自己的域名
 var MyHOST = new RegExp("chenweiliang.com");
 if (!MyHOST.test(document.referrer)) {
 location.href = "http://" + MyHOST;
 return;
 }
 location.href = jump_url;
}, 1000);
setTimeout(function(){window.opener=null;window.close();}, 50000);
</script>
<title>页面加载中,请稍候...</title>
<style type="text/css">
body{background:#555}.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:45%;left:50%;margin-left:-100px;margin-top:2px;color:#000;letter-spacing:1px;font-size:20px;font-family:Arial}.spinner{position:absolute;top:45%;left:50%;display:block;margin-left:-160px;width:1px;height:1px;border:20px solid rgba(255,0,0,1);-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>

请注意修改://非本站域名不允许使用此跳转页面,请自行修改chenweiliang.com为自己的域名

PHP和JS哪个好?

PHP 版本和 JS 版本的功能是一样的,区别在于:

注意:如果测试JS版本的跳转代码无效,就用PHP的跳转代码。

第 2 步:添加代码到 function.php 文件

上传跳转页面后,接着就是将外链跳转代码,添加到WordPress主题的 function.php 文件里。

2 选 1 代码:

外链跳转无加密

// 外链跳转无加密go.html?url
add_filter('the_content','link_to_jump',999);
 function link_to_jump($content){
 preg_match_all('/<a(.*?)href="(.*?)"(.*?)>/',$content,$matches);
 if($matches){
 foreach($matches[2] as $val){
 if(strpos($val,'://')!==false && strpos($val,home_url())===false && strpos($val,'chenweiliang.com')===false && strpos($val,'ufo.org.in')===false && strpos($val,'etufo.org')===false && !preg_match('/\.(jpg|jepg|png|ico|bmp|gif|tiff)/i',$val) && !preg_match('/(ed2k|thunder|Flashget|flashget|qqdl):\/\//i',$val))
{ 
 $content=str_replace("href=\"$val\"", "rel=\"nofollow\" target=\"_blank\" href=\"go.html?url=$val\" ",$content);

}
 }
 }
 return $content;
 }

外链跳转base64加密【推荐】

// 外链跳转base64加密go.html?url
 add_filter('the_content','link_to_jump',999);
 function link_to_jump($content){
 preg_match_all('/<a(.*?)href="(.*?)"(.*?)>/',$content,$matches);
 if($matches){
 foreach($matches[2] as $val){
 if(strpos($val,'://')!==false && strpos($val,home_url())===false && strpos($val,'chenweiliang.com')===false && strpos($val,'ufo.org.in')===false && strpos($val,'etufo.org')===false && !preg_match('/\.(jpg|jepg|png|ico|bmp|gif|tiff)/i',$val) && !preg_match('/(ed2k|thunder|Flashget|flashget|qqdl):\/\//i',$val))
{ 
 $content=str_replace("href=\"$val\"", "rel=\"nofollow\" target=\"_blank\" href=\"go.html?url=" .base64_encode($val). "\" ",$content);

}
 }
 }
 return $content;
 }

排除指定某个外链域名不自动转成内链(域名白名单):

&& strpos($val,'你的域名')===false

robots.txt屏蔽蜘蛛

为了避免搜索引擎蜘蛛抓取到跳转链接,我们可以 robots.txt 文件里,添加禁止搜索引擎蜘蛛抓取的规则:

User-agent: *
Disallow: /go.html?url=*
Disallow: /go.php?url=*

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