系统自动把外链都加上nofollow属性,修改方法如下:
1、打开目录source/function/function_discuzcode.php文件,查找parseurl函数:
搜索- function parseurl($url, $text, $scheme) {
- global $_G;
- if(!$url && preg_match("/((https?|ftp|gopher|news|telnet|rtsp|mms|callto|bctp|thunder|qqdl|synacast){1}:\/\/|www\.)[^\["']+/i", trim($text), $matches)) {
- $url = $matches[0];
- $length = 65;
- if(strlen($url) > $length) {
- $text = substr($url, 0, intval($length * 0.5)).' ... '.substr($url, - intval($length * 0.3));
- }
- return '<a href="'.(substr(strtolower($url), 0, 4) == 'www.' ? 'http://'.$url : $url).'" target="_blank">'.$text.'</a>';
- } else {
- $url = substr($url, 1);
- if(substr(strtolower($url), 0, 4) == 'www.') {
- $url = 'http://'.$url;
- }
- $url = !$scheme ? $_G['siteurl'].$url : $url;
- return '<a href="'.$url.'" target="_blank">'.$text.'</a>';
- }
- }
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修改为:
- function parseurl($url, $text, $scheme) {
- global $_G;
- if(!$url && preg_match("/((https?|ftp|gopher|news|telnet|rtsp|mms|callto|bctp|thunder|qqdl|synacast){1}:\/\/|www\.)[^\["']+/i", trim($text), $matches)) {
- $url = $matches[0];
- $length = 65;
- if(strlen($url) > $length) {
- $text = substr($url, 0, intval($length * 0.5)).' ... '.substr($url, - intval($length * 0.3));
- }
- $url = nofollow($url);
- return '<a href="'.(substr(strtolower($url), 0, 4) == 'www.' ? 'http://'.$url : $url).'" target="_blank">'.$text.'</a>';
- } else {
- $url = substr($url, 1);
- if(substr(strtolower($url), 0, 4) == 'www.') {
- $url = 'http://'.$url;
- }
- $url = !$scheme ? $_G['siteurl'].$url : $url;
- return '<a href="'.nofollow($url).'" target="_blank">'.$text.'</a>';
- }
- }
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2.在parseurl函数后面新增nofollow函数,代码如下:
- function nofollow($url = '')
- {
- $temp = array();
- if( ! empty($url))
- {
- $temp = parse_url($url);
- if(isset($temp['host']) && $temp['host'] != $_SERVER['HTTP_HOST'])
- {
- $url .= '" rel="nofollow"';
- }
- }
- unset($temp);
- return $url;
- }
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