高手来看下哇~~php连接不上mysql~新手求解！

dreamweaver可以绑定到指定数据库~~但是显示网页的时候就是Can't pConnect MySQL Server!require_once("config.php");
require_once("config.inc.php");
require_once("install.php");class cls_mysql
{protected $link_id; public function __construct($dbhost, $dbuser, $dbpw, $dbname='' , $charset = 'gbk')
{
if((!$this->link_id = @mysql_connect($dbhost, $dbuser, $dbpw)))
{
$this->ErrorMsg("Can't pConnect MySQL Server!");
}        $db= new cls_mysql(S_Sqlservername,S_Sqluserid,S_Sqlpwd,S_Sqldbname);
config.php如下；<?php
define("S_SiteName","xsa");
define("S_SiteDomain","http://localhost");
define("S_CheckCode","1234");
define("S_Sqlservername","localhost");
define("S_Sqldbname","music");
define("S_Sqluserid","wangqile");
define("S_Sqlpwd","1234");
define("S_SitePath","/phptestese/ll/ss/");
?>