Can I get help re-writing my php code without using session_start? If I need to attach anything else please let me know

Question

<?php

// Start session
session_start();

$action = filter_input(INPUT_POST, 'action');
if ($action === NULL) {
    $action = filter_input(INPUT_GET, 'action');
    if ($action === NULL) {
            $action = 'display_login';
    }
}
//instantiate variable(s)
$email = '';

switch ($action) {
    case 'display_login':
        include('customer_login.php');
        break;
    case 'display_register':
        // If customer is not in the session, set it in the session
        if (!isset($_SESSION['customer'])) {
            $email = filter_input(INPUT_POST, 'email');
            $customer = get_customer_by_email($email);
            $_SESSION['customer'] = $customer;
        }

?>

Am I able to write this code without using the session_start() function? I have been working to change this without having to use the session_start function but have had a lot of trouble. Is this possible and if so, have I provided enough to do so?

Answer 1

SHORT ANSWER: NO.

Session variables are set with the PHP global variable: $_SESSION , so you have to use session_start() to start a session.

If you don't use session_start() , unless you don't use $_SESSION .