<?php
include("config.php");
//session_start();
$username = $_POST['username'];
$password = $_POST['password'];
$query = mysqli_query($con,"Select * from user where username = '$username' and password ='$password'") or die(mysqli_error());
$count = mysqli_num_rows($query);
$row = mysqli_fetch_array($query);
if ($count > 0){
$_SESSION['id']=$row['user_id'];
echo 'true';
}else{
echo 'false';
}
?>