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function deleteemptyarray( $val ) { $links =''; if( is_array( $val ) ) { foreach( $val as $v =>$_v) { if( !emptyempty( $_v[0] ) ) { $links .=$_v[0].'|'; } } return substr($links,0,-1); } else { return false; } } function getoutlink($body) { $tempcontent = $body; preg_match_all("/<a(.*?)href=(.*?)</a>/i",$tempcontent,$tempurl); $urls =array(); foreach($tempurl[0] as $value) { if(strstr($value,'http') ) { if(stristr($value ,$localurl)) { continue; } else { preg_match_all("/hrefs*=s*(['"]?)(.*?)\1/is", $value, $vlink); $urls[] = $vlink[2]; } } } //print_r($urls);phpfensi.com $strurl = explode('|',deleteemptyarray( $urls)); $tempcount = array_unique($strurl); echo ' 外链'.count($tempcount)-1; }
调用方法,代码如下:
$body ="<a href=/ab.htm>aaa</a><a href=http://www.phpfensi.com>我是外部连接</a>"; echo getoutlink($body);