PHP:UBB编辑器中自动解析URL函数

   function autourl($message){
      global $db_autoimg;
      if($db_autoimg==1){
       $message= preg_replace(array(
      "/(?<=[^/]a-z0-9-=/"'///])((https?|ftp):////|www/.)([a-z0-9///-_+=.~!%@?#%&;:$//│]+/.gif)/i",
      "/(?<=[^/]a-z0-9-=/"'///])((https?|ftp):////|www/.)([a-z0-9///-_+=.~!%@?#%&;:$//│]+/.jpg)/i"
      ), array(
      "[img]//1//3[/img]",
      "[img]//1//3[/img]"
      ), ' '.$message);
     }
      $message= preg_replace( array(
     "/(?<=[^/]a-z0-9-=/"'///])((https?|ftp|gopher|news|telnet|mms|rtsp):////|www/.)([a-z0-9///-_+=.~!%@?#%&;:$//│]+)/i",
     "/(?<=[^/]a-z0-9///-_.~?=:.])([_a-z0-9-]+(/.[_a-z0-9-]+)*@[a-z0-9-]+(/.[a-z0-9-]+)*(/.[a-z]{2,4}))/i"
      ), array(
      "[url]//1//3[/url]",
      "[email]//0[/email]"
      ), ' '.$message);
      return $message;
     }