ns ) {
				$active_plugins = array_merge( $active_plugins, $network_plugins );
			}
		}

		sort( $active_plugins );
		return array_unique( $active_plugins );
	}

	/**
	 * Get the current site's WordPress.com ID.
	 *
	 * @return int Blog ID.
	 */
	public static function get_wpcom_site_id() {
		// Returns local blog ID for a multi-site network.
		if ( defined( 'IS_WPCOM' ) && constant( 'IS_WPCOM' ) ) {
			return \get_current_blog_id();
		}

		// Returns cache site ID.
		return \Jetpack_Options::get_option( 'id' );
	}

	/**
	 * Returns true if the free_plan is set to not empty in URL, which is used for testing purpose.
	 */
	public static function is_forced_free_plan() {
		// phpcs:ignore WordPress.Security.NonceVerification.Recommended, WordPress.Security.ValidatedSanitizedInput.InputNotSanitized, WordPress.Security.ValidatedSanitizedInput.MissingUnslash
		return isset( $_GET['free_plan'] ) && $_GET['free_plan'];
	}

	/**
	 * Returns true if the new_pricing_202210 is set to not empty in URL for testing purpose.
	 */
	public static function is_forced_new_pricing_202208() {
		$referrer = wp_get_referer();
		// phpcs:ignore WordPress.Security.NonceVerification.Recommended, WordPress.Security.ValidatedSanitizedInput.InputNotSanitized, WordPress.Security.ValidatedSanitizedInput.MissingUnslash
		return ( isset( $_GET['new_pricing_202208'] ) && $_GET['new_pricing_202208'] ) || $referrer && strpos( $referrer, 'new_pricing_202208=1' ) !== false;
	}
}