給Discuz X論壇的外部連接增長nofollow方法,測試版本Discuz! X3.1,其它版本未經測試 php
打開目錄source/function/function_discuzcode.php文件,查找parseurl函數,對照如下代碼進行修改: 函數
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">'.$text.'</a>'; } }
在parseurl函數後面新增nofollow函數,代碼以下: 測試
function nofollow($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; }