Přistoupení k PDO connect z jiného souboru

<?php
class Connect
{
    private $host = 'localhost';
    private $dbname = 'nove';
    private $username = 'root';
    private $password = '';
    
    public $con = '';
    
    function __construct() {
        $this->connect();
    }
    
    function connect()
    {
        try
        {
          $this->con = new PDO("mysql:host=$this->host;dbname=$this->dbname", $this->username, $this->password );
          $this->con->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
        }
        catch(PDOException $e)
        {
            echo 'We\'re sorry but there was an error.';
        }
    }
}
?>

$this->con = new Connect();
$this->con->prepare("SLECT * FROM kategorie");

include_once("Connect.php");