OneLogin_Saml2_Settings::_loadSettingsFromFile PHP Method

    private function _loadSettingsFromFile()
    {
        $filename = $this->getConfigPath() . 'settings.php';
        if (!file_exists($filename)) {
            throw new OneLogin_Saml2_Error('Settings file not found: %s', OneLogin_Saml2_Error::SETTINGS_FILE_NOT_FOUND, array($filename));
        }
        include $filename;
        // Add advance_settings if exists
        $advancedFilename = $this->getConfigPath() . 'advanced_settings.php';
        if (file_exists($advancedFilename)) {
            include $advancedFilename;
            $settings = array_merge($settings, $advancedSettings);
        }
        return $this->_loadSettingsFromArray($settings);
    }