<?php
    error_reporting(0);
    session_start();

    if(isset($_GET['username'], $_GET['password'])){

        if(isset($_SESSION['hard_login_check'])){
            echo 'Already logged in..';

        }else if(!isset($_GET['username']{3}) || strtolower($_GET['username']) != $hidden_username){
            echo 'Wrong username..';

        }else if(!isset($_GET['password']{7}) || $_GET['password'] != $hidden_password){
            echo 'Wrong password..';

        }else{
            $_SESSION['hard_login_check'] = true;
            echo 'Login success!';
            header('Location: ./');
        }

        echo '<hr>';
    }

    highlight_file(__FILE__);