$str = preg_replace("/\[\<a\s*href\=\"(http|https|ftp)\:\/\/([^[:space:]]+)\.(gif|png|jpg|jpeg|bmp)\"\s*[^\>]*\>[^\s]*\<\/a\>\]/i", "<img src='$1://$2.$3' id='target_resize_image[]' onclick='image_window(this);'>", $str);