Untitled

Login functie:

<?php
class Login extends Main
{
	protected $username;
	protected $password;

	function log($formData = []) {
		session_start();
		$this->username = $formData['username'];
		$this->password = $formData['password'];

		$connection = parent::Connect()->prepare("SELECT user_naam FROM users WHERE user_naam = :name");
		if( $connection->execute(
			[
				"name" 		=> $this->username,
			]
		)) {
			if($connection->fetch(PDO::FETCH_ASSOC)) {
				$getUser = parent::Connect()->prepare("SELECT * FROM users WHERE user_naam = :name");
				$getUser->execute(['name' => $this->username]);
				$user = $getUser->fetch(PDO::FETCH_ASSOC);
				if(password_verify($this->password, $user['user_wachtwoord'])) {
					$loginArray = [
						'username' 	=> $user['user_naam'],
						'lastname'	=> $user['user_achternaam'],
						'bday'		=> $user['user_geboren'],
						'since'		=> $user['user_sinds'],
						'role'		=> $user['user_role'],
					];

					$_SESSION['user'] = $loginArray;

					var_dump($_SESSION);

					echo '<script type="text/javascript"> window.open("https://intranet.onlinebazen.nl/index.php?page=dashboard","_self");</script>';
				} else {
					echo 'Geen Gebruikersnaam of wachtwoord gevonden!';
				}
			} else {
				echo 'Geen Gebruikersnaam of wachtwoord gevonden!';
			}
		} else {
			echo 'Geen Gebruikersnaam of wachtwoord gevonden!';
		}
	}
}
?>

Header.php:

<!DOCTYPE html>
<?php include_once($_GLOBAL['main_dir'].'Classes/autoloader.php'); ?>
<?php session_start(); ?>
<html lang="NL_nl">
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>Online Bazen - Intranet</title>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
    <link href="<?= $_GLOBAL['main_url'] ?>app.css" rel="stylesheet">
</head>
<body>
<?php var_dump($_SESSION); ?>