исправить php скрипт

<?php
//Получаем IP
if(getenv('HTTP_X_FORWARDED_FOR'))
{$ip = getenv('HTTP_X_FORWARDED_FOR');}
elseif(getenv('REMOTE_ADDR'))
{$ip = getenv('REMOTE_ADDR');}

//Соединяемся с БД
$host = "localhost";
$user = "user";
$pass = "pass";
$db = "db";
$connect = @mysql_connect("$host", "$user","$pass");
@mysql_select_db("$db", $connect);

//Сравниваем с ip-шниками в БД
$query = "SELECT `ip` FROM `proxy_list` = '$ip'";
//$ip2 = explode($query, ':');
//$query...