<?php require_once('config.php') ?>

<?php include('config.php') ?>

<?php

if($user['email'] === $email) {
    array_push($errors, 'email already exists');
}

$query = "INSERT INTO users (username, email, password)
          VALUES ('$username', '$email', '$password')";

mysqli_query($conn, $query);
//variables superglobales de session, almacena datos del usuario para las sesiones
$_SESSION['username'] = '$username';
$_SESSION['success'] = 'you are logged in';
//redirecciona
header('location: index.php');

//validacion del form
if(empty($username)) {
    array_push($errors, 'Username is required');
}

if(empty($password)){
    array_push($errors, 'Password is required');
}

//Si no hay errores, consulta en la bd y devuelve el valor con la informacion de log consultada
if(count($errors) == 0){
    $password = md5($password);
    $query = "SELECT * FROM users WHERE username='$username' AND password='$password'";
    $results = mysqli_query($conn, $query);

    if(mysqli_num_rows($results) == 1) {
        $_SESSION['username'] = $username;
        $_SESSION['success'] = 'You are logged in';
        header('location: index.php');
    } else {
        array_push($errors, 'Wrong username/password');
    }
}