<?
$username=$_POST["username"];
$password=$_POST["password"];
if ($username=="" or $password==""){
echo "<H3>ERROR : กรุณากรอกข้อมูลให้ครบ</h3>";exit();
}
require_once("../include/connect_db.php");
$db="db";
$sql="select * from employee where username='$username'
and password='$password'";