ManagerAPI::isValidWorker PHP Method

    private function isValidWorker()
    {
        // Get apiKey
        $this->getAPIKey();
        if ($this->apiKey == NULL) {
            return false;
        }
        // Get ip
        $ipAddress = $_SERVER['REMOTE_ADDR'];
        if (count($this->select("SELECT ipAddress FROM Worker WHERE ipAddress = '" . $this->mysqli->real_escape_string($ipAddress) . "' and apiKey = " . $this->mysqli->real_escape_string($this->apiKey))) > 0) {
            return true;
        } else {
            return false;
        }
    }