Реплейс внешних ссылок

 
$text = ereg_replace("/(http:\\/\\/)(\\S+)/si",'<a href="/redirect?url=http://\\2" target=_blank>http://\\2</a>',$text);
 

 
function OutLink($string) 
{ 
    $host = "ТУТ_ВАШ_ДОМЕН.ЗОНА"; 
    $string = preg_replace('/href="?(http:\/\/(?!(www\.|)'.$host.')([^">\s]*))/ie',  "'href=\"/redirect?url=$1\"'", $string); 
    return $string; 
} 
 

 
$article_content = OutLink($article_content);