wp_is_maintenance_mode() – Check if maintenance mode is enabled.

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Check 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.


$bool = wp_is_maintenance_mode();



bool True if maintenance mode is enabled, false otherwise.


File name: wordpress/wp-includes/load.php

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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;

 * 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;

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