sql server localhost连接不上

[session1983]

$myServer = "localhost"; 

$myUser = "sa"; 

$myPass = "123456"; 

$myDB = "Northwind"; 

$s = @mssql_connect($myServer, $myUser, $myPass) 

or die("Couldn't connect to SQL Server on $myServer"); 

$d = @mssql_select_db($myDB, $s) 

or die("Couldn't open database $myDB"); 

[free212]

有什么错误提示?
看你的sql server是什么版本,尝试下将localhost换为当前机器名或IP试试.