Parse error: syntax error, unexpected '.0' (T_DNUMBER), expecting ',' or ')'

<?php

 if(!defined('BEZ_KEY'))
 {
     header("HTTP/1.1 404 Not Found");
     exit(file_get_contents('404.html'));
 }

 $db_connect = mysql_connect(127.0.0.1, user, pass ) or die(BEZ_ERROR_CONNECT);

 define('BEZ_CONNECT', $db_connect);

 mysql_select_db( mydb, BEZ_CONNECT )or die(BEZ_NO_DB_SELECT);

 mysql_query ("SET NAMES utf8");
 mysql_query ("set character_set_client='utf8'");
 mysql_query ("set character_set_results='utf8'");
 mysql_query ("set collation_connection='utf8_general_ci'");
 ?>

Ошибка в этой строке, хочу понять где:

 $db_connect = mysql_connect(127.0.0.1, user, pass ) or die(BEZ_ERROR_CONNECT);