if (isset($_SESSION['currentID'])){
    if ($_GET['action'] !== "close"){
        unset($_SESSION['currentID']);
        unset($_SESSION['type']);
    } else {
        if ($_SESSION['type'] == "quote"){
            $this = new Quote($_SESSION['currentID'], $_SESSION['type']);
        } else {
            $this = new Job($_SESSION['currentID'], $_SESSION['type']);
        }
        $client = $this->getClientDetails();
    }
}