PhpSandbox\PHPSandbox::undefineSuperglobal PHP Method

    public function undefineSuperglobal($name, $key = null)
    {
        if (is_array($name)) {
            return $this->undefineSuperglobals($name);
        }
        $name = $this->normalizeSuperglobal($name);
        if ($key !== null && is_array($this->definitions['superglobals'][$name])) {
            if (isset($this->definitions['superglobals'][$name][$key])) {
                unset($this->definitions['superglobals'][$name][$key]);
            }
        } else {
            if (isset($this->definitions['superglobals'][$name])) {
                $this->definitions['superglobals'][$name] = [];
            }
        }
        return $this;
    }