<?php

    use PHPMailer\PHPMailer\PHPMailer;
    use PHPMailer\PHPMailer\Exception;
    require '/var/www/vendor/autoload.php';

    /* You don't need these if you include autoload.php'; */
    /*
    require '/var/www/PHPMailer/src/Exception.php';
        require '/var/www/PHPMailer/src/PHPMailer.php';
        require '/var/www/PHPMailer/src/SMTP.php';
    */

    class Email {

            public function sendConfirm($to, $code, $username) {

            ... OTHER CODE ...

            }
    }

?>