<?php

    $username = $_POST['username'];
    $email =  $_POST['email'];
    $pass = $_POST['pass'];
    $pass2 = $_POST['pass2'];


    $con = mysqli_connect("localhost", "root", "", "smarttime");
    $query = mysqli_query($con,"INSERT INTO users (use_name, use_email, use_pass) values ('$username', '$email', '$pass')");

    $test = mysqli_query($con,"SELECT * from users");

    $row = mysqli_fetch_array($test);


    if(empty($username) || empty($pass) || empty($email) || empty($pass2))
    {
        header("Location:signup.php");
    }else{
        if($row['use_email'] == $email){
                    header("Location:login.php");
        }else{
                $query;
                session_start();
                $_SESSION['user_id'] = $row['use_id'];
                $_SESSION['nome'] = $row['use_name'];
                header('Location:logged.php');
                exit();

        }
    }

 ?>

$query = mysqli_query($con,"INSERT INTO users (use_name, use_email, use_pass) values
('$username', '$email', '$pass')");
$id = mysqli_insert_id($con);

$test = mysqli_query($con,"SELECT * from users WHERE user-id={$id});