WordPress外链跳转内链实现方法

WordPress 博客外链跳转内链,尽可能避免权重流失。最常用是将评论者链接转为内链并用 base64 加密跳转。这里介绍两种方法。

张戈带跳转页面版本

1.1 完整跳转代码

  1. PHP版本
    <?php 
    if(strlen($_SERVER['REQUEST_URI']) > 384 ||
        strpos($_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=="zhangge" ) {
        $t_url="https://zhang.ge";
    } elseif($t_url=="baidu") {
        $t_url="https://www.baidu.com/";
    }
     
    //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 echo $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 echo $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>

    将以上代码保存为 go.php 上传到网站根目录即可。

  2. JS版本
    <html>
    <html lang="zh-CN">
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no">
    <meta name="renderer" content="webkit">
    <meta http-equiv="Cache-Control" content="no-transform" />
    <meta http-equiv="Cache-Control" content="no-siteapp" />
    <meta name="robots" content="noindex, nofollow" />
    <meta name="applicable-device" content="pc,mobile">
    <meta name="HandheldFriendly" content="true" />
    <meta name="description" content="跳转页面" />
    <meta name="keywords" content="跳转页面" />
    <script>
    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))};
    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("/goto/",""); //注意代码中的/goto/和跳转地址/goto/保持一致,请记得自行修改!
         }
    }
    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);
    }
    // 自定义一些特殊字符串的跳转,请根据实际需求自行发挥,比如:
    // 访问 "/goto/baidu" 会跳转到百度首页:
    if(jump_url=="baidu") {
        jump_url="https://www.baidu.com/";
    }
    // 网址校验
    var UrlReg = "^((http|https|thunder|qqdl|ed2k|Flashget|qbrowser|ftp|rtsp|mms)://)";
    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() {   
    // 防止盗用,但是微信等客户端无法取得referrer,因此这里允许了referrer为空的访问,请自行修改zhang.ge为自己的域名
        var MyHOST = new RegExp("zhang\.ge");
        if (!MyHOST.test(document.referrer) && document.referrer.length ) {
            alert("请不要盗用本站跳转页面!");
            location.href = "https://zhang.ge/";
            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">
    a,abbr,acronym,address,applet,article,aside,audio,b,big,blockquote,body,canvas,caption,center,cite,code,dd,del,details,dfn,div,dl,dt,em,embed,fieldset,figcaption,figure,footer,form,h1,h2,h3,h4,h5,h6,header,hgroup,html,i,iframe,img,ins,kbd,label,legend,li,mark,menu,nav,object,ol,output,p,pre,q,ruby,s,samp,section,small,span,strike,strong,sub,summary,sup,table,tbody,td,tfoot,th,thead,time,tr,tt,u,ul,var,video{margin:0;padding:0;border:0;font-size:100%;font:inherit;vertical-align:baseline}body{background:#3498db}#loader-container{width:188px;height:188px;color:#fff;margin:0 auto;position:absolute;top:50%;left:50%;margin-right:-50%;transform:translate(-50%,-50%);border:5px solid #3498db;border-radius:50%;-webkit-animation:borderScale 1s infinite ease-in-out;animation:borderScale 1s infinite ease-in-out}#loadingText{font-family:"Microsoft YaHei",Helvetica,Arial,Lucida Grande,Tahoma,sans-serif,Raleway,sans-serif;font-size:1.4em;position:absolute;top:50%;left:50%;margin-right:-50%;transform:translate(-50%,-50%)}@-webkit-keyframes borderScale{0%{border:5px solid #fff}50%{border:25px solid #3498db}100%{border:5px solid #fff}}@keyframes borderScale{0%{border:5px solid #fff}50%{border:25px solid #3498db}100%{border:5px solid #fff}}
    </style>
    </head>
    <body>
        <div id="loader-container"><p id="loadingText">页面加载中...</p></div>
    </body>
    </html>

    选择JS 版本将以上代码保存为 go.html 上传到网站根目录即可。

Ps:2个版本的功能是一致的,优缺点区别:PHP版本是动态的,会略微产生服务器的性能负载,而JS版本则需要浏览器支持JS才可以功能。不过目前来看,绝大部分浏览器都是支持的!

1.2 伪静态

    1. Nginx伪静态
      1. PHP版本
        # 外链跳转伪静态 php版本
        rewrite ^/go/(.*)$ /go.php?url=$1 last; #注意go.php的实际路径,默认为网站根目录
      2. JS版本
        # 外链跳转伪静态 HTML 版本
        rewrite ^/go/(.*)$ /go.html?url=$1 last; #注意go.html 的实际路径,默认为网站根目录

将上述规则代码添加到 location / { 的前面即可。

  1. Apache伪静态
    1. PHP版本
      RewriteRule ^go/(.*)$ /go.php?url=$1 [L]
    2. JS版本
      RewriteRule ^go/(.*)$ /go.html?url=$1 [L]

    将上述规则代码添加到 .htaccess 文件的第一行即可。

1.3 WordPress替换

  1. 文章外链替换
    //文章外链跳转伪静态版
    add_filter('the_content','link_jump',999);
    function link_jump($content){
        preg_match_all('/<a(.*?)href="(.*?)"(.*?)>/',$content,$matches);
        if($matches){
            foreach($matches[2] as $val){
                if(strpos($val,'://')!==false && strpos($val,home_url())===false && !preg_match('/\.(jpg|jepg|png|ico|bmp|gif|tiff)/i',$val) && !preg_match('/(ed2k|thunder|Flashget|flashget|qqdl):\/\//i',$val)){
                $content=str_replace("href=\"$val\"", "href=\"".home_url()."/go/".base64_encode($val)."\" rel=\"nofollow\"",$content);
                }
            }
        }
        return $content;
    }
  2. 评论外链跳转
    //评论者链接重定向
    function commentauthor($comment_ID = 0) {
        $url    = get_comment_author_url( $comment_ID );
        $author = get_comment_author( $comment_ID );
        if ( empty( $url ) || 'http://' == $url ) {
    		echo $author;
        } else {
            if (!preg_match(home_url(),$url)) {
                echo "<a href='".home_url()."/go/".base64_encode($url)."' rel='nofollow' target='_blank' class='url'>$author</a>";
            } else {
                echo "<a href='$url' target='_blank' class='url'>$author</a>";
            }
        }	
    }
  3. 下载外链跳转
    // 下载外链跳转
    function links_nofollow($url) {
        if(strpos($url,'://')!==false && strpos($url,'zhang.ge')===false && !preg_match('/(ed2k|thunder|Flashget|flashget|qqdl):\/\//i',$url)) {
    	$url = str_replace($url, home_url()."/go/".base64_encode($url),$url);
    	     }
        return $url;
    }

上述代码只供参考,修改一下替换后的链接形式即可。部署后,刷新前台文章或评论,就能看到效果了。

原文:张戈博客 – 分享最近对网站外链跳转页面代码的一些改善

JV 版本:用 template_redirect 钩子和 wp_redirect 函数进行 302 跳转

方法:先用正则以及 WordPress 钩子修改外链形式为 /goto/xxxxx;然后解密 xxxx 部分,用 template_redirect 钩子和 wp_redirect 函数进行 302 跳转。(此方法需在 WordPress 中使用)

function convert_to_internal_links($content){
    preg_match_all('/\shref=(\'|\")(http[^\'\"#]*?)(\'|\")([\s]?)/',$content,$matches);
    if($matches){
        foreach($matches[2] as $val){
            if(strpos($val,home_url())===false){
                $rep = $matches[1][0].$val.$matches[3][0];
                $new = '"'.home_url().'/goto/'.base64_encode($val).'" target="_blank"';
                $content = str_replace("$rep","$new",$content);
            }
        }
    }
    return $content;
}
add_filter('the_content','convert_to_internal_links',99); // 文章正文外链转换
add_filter('comment_text','convert_to_internal_links',99); // 评论内容的链接转换
add_filter('get_comment_author_link','convert_to_internal_links',99); // 访客的链接转换
 
function inlo_redirect() {
    $baseurl = 'goto';
    $request = 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
    $hop_base = trailingslashit(trailingslashit(home_url()).$baseurl); // 删除末尾的 斜杠/ 符号
    if (substr($request,0,strlen($hop_base)) != $hop_base)    return false;
    $hop_key = str_ireplace($hop_base, '', $request);
    if(substr($hop_key, -1) == '/')$hop_key = substr($hop_key, 0, -1);
    if (!empty($hop_key)) {
        $url = base64_decode($hop_key);
        wp_redirect( $url, 302 );
        exit;
    }
}
add_action('template_redirect','inlo_redirect');

原文:WordPress 将评论者链接转为内链并用base64加密

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