Is this script good to use to check a user's password?!
function checkPass($user,$password)
{
global $link;
$result = mysql_query("SELECT id,user,password from users
WHERE user='$user',password='$password'",$link);
if(!$result)
die("CheckPass fatal error: ".mysql_error());
if(mysql_num_rows($result))
return mysql_fetch_array($result);
return false;
}