wp_is_maintenance_mode() │ WP 5.5.0

Checks if maintenance mode is enabled.

Checks for a file in the WordPress root directory named ".maintenance". This file will contain the variable $upgrading, set to the time the file was created. If the file was created less than 10 minutes ago, WordPress is in maintenance mode.

Return

true|false. True if maintenance mode is enabled, false otherwise.

Usage

wp_is_maintenance_mode();

Notes

• Global. Int. $upgrading The Unix timestamp marking when upgrading WordPress began.

Changelog

wp_is_maintenance_mode() wp is maintenance mode code ^{WP 6.8}

function wp_is_maintenance_mode() {
	global $upgrading;

	if ( ! file_exists( ABSPATH . '.maintenance' ) || wp_installing() ) {
		return false;
	}

	require ABSPATH . '.maintenance';

	// If the $upgrading timestamp is older than 10 minutes, consider maintenance over.
	if ( ( time() - $upgrading ) >= 10 * MINUTE_IN_SECONDS ) {
		return false;
	}

	// Don't enable maintenance mode while scraping for fatal errors.
	if ( is_int( $upgrading ) && isset( $_REQUEST['wp_scrape_key'], $_REQUEST['wp_scrape_nonce'] ) ) {
		$key   = stripslashes( $_REQUEST['wp_scrape_key'] );
		$nonce = stripslashes( $_REQUEST['wp_scrape_nonce'] );

		if ( md5( $upgrading ) === $key && (int) $nonce === $upgrading ) {
			return false;
		}
	}

	/**
	 * Filters whether to enable maintenance mode.
	 *
	 * This filter runs before it can be used by plugins. It is designed for
	 * non-web runtimes. If this filter returns true, maintenance mode will be
	 * active and the request will end. If false, the request will be allowed to
	 * continue processing even if maintenance mode should be active.
	 *
	 * @since 4.6.0
	 *
	 * @param bool $enable_checks Whether to enable maintenance mode. Default true.
	 * @param int  $upgrading     The timestamp set in the .maintenance file.
	 */
	if ( ! apply_filters( 'enable_maintenance_mode', true, $upgrading ) ) {
		return false;
	}

	return true;
}