gistfile1.php

<?php
    $id = $_GET['id'];
    $pw = $_GET['pw'];

    $sql = "select id, pwdcompare('$pw', pw) as pw 
    from user 
    where user = '$id'"; //pwdcompare(): http://msdn.microsoft.com/ko-kr/library/dd822792.aspx

    $result = mssql_query($sql);
    $row=mssql_fetch_array($result);

    if($row[pw] == 1){
        //로그인 성공  
    }
    else{
        //로그인 실패...
    }
?>