PayPal\Core\PPConfigManager::__construct PHP Метод

    private function __construct()
    {
        $configFile = null;
        if (defined('PP_CONFIG_PATH')) {
            // if PP_CONFIG_PATH *is set* but not set to a string with length > 0
            // then let's disable ini file loading
            if (is_string(PP_CONFIG_PATH) && strlen(PP_CONFIG_PATH) > 0) {
                $configFile = PP_CONFIG_PATH . DIRECTORY_SEPARATOR . 'sdk_config.ini';
            }
        } else {
            $configFile = implode(DIRECTORY_SEPARATOR, array(dirname(__FILE__), "..", "config", "sdk_config.ini"));
        }
        if (!is_null($configFile) && file_exists($configFile)) {
            $this->load($configFile);
        }
    }