$consumer_email = $this->get_current_option( 'consumer_email' );
		$bonus          = $this->plugin_options && $this->plugin_options->get( 'do_beta' ) ? '+' : '';
		$php_version    = preg_replace( '@^(\d+\.\d+).*@', '\1', phpversion() );

		return sprintf( 'WP-Rocket|%s%s|%s|%s|%s|%s;', $this->plugin_version, $bonus, $consumer_key, $consumer_email, esc_url( $this->site_url ), $php_version );
	}

	/**
	 * Get a plugin option. If the value is currently being posted through the settings page, it is returned instead of the one stored in the database.
	 *
	 * @since  3.3.6
	 * @access protected
	 * @author Grégory Viguier
	 *
	 * @param  string $field_name Name of a plugin option.
	 * @return string
	 */
	protected function get_current_option( $field_name ) {
		if ( current_user_can( 'rocket_manage_options' ) && wp_verify_nonce( filter_input( INPUT_POST, '_wpnonce' ), $this->settings_nonce_key . '-options' ) ) {
			$posted = filter_input( INPUT_POST, $this->settings_slug, FILTER_DEFAULT, FILTER_REQUIRE_ARRAY );

			if ( ! empty( $posted[ $field_name ] ) && is_string( $posted[ $field_name ] ) ) {
				// The value has been posted through the settings page.
				return sanitize_text_field( $posted[ $field_name ] );
			}
		}

		if ( ! $this->plugin_options ) {
			return '';
		}

		$option_value = $this->plugin_options->get( $field_name );

		if ( $option_value && is_string( $option_value ) ) {
			return $option_value;
		}

		return '';
	}
}