<?php session_start(); include '../Class/CustomerAccount.php'; include "../connection.php"; $Username = mysqli_real_escape_string($conn, $_POST['user']); $Password = mysqli_real_escape_string($conn, $_POST['pass']); $Customerid = CustomerAccount::GetID($Username, $Password); if ($Customerid == null) { echo "Invalid your Account"; } else { echo "success"; $_SESSION['Customerid'] = $Customerid; }