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wp_maintenance()

This function’s access is marked private. This means it is not intended for use by plugin or theme developers, only in other core functions. It is listed here for completeness.

Die with a maintenance message when conditions are met.

Description

The default message can be replaced by using a drop-in (maintenance.php in the wp-content directory).

Source

File: wp-includes/load.php 

function wp_maintenance() {
	// Return if maintenance mode is disabled.
	if ( ! wp_is_maintenance_mode() ) {
		return;
	}

	if ( file_exists( WP_CONTENT_DIR . '/maintenance.php' ) ) {
		require_once WP_CONTENT_DIR . '/maintenance.php';
		die();
	}

	require_once ABSPATH . WPINC . '/functions.php';
	wp_load_translations_early();

	header( 'Retry-After: 600' );

	wp_die(
		__( 'Briefly unavailable for scheduled maintenance. Check back in a minute.' ),
		__( 'Maintenance' ),
		503
	);
}

Uses

Uses Description
wp-includes/load.php: wp_is_maintenance_mode()

Check if maintenance mode is enabled.
wp-includes/l10n.php: __()

Retrieve the translation of $text.
wp-includes/load.php: wp_load_translations_early()

Attempt an early load of translations.
wp-includes/functions.php: wp_die()

Kills WordPress execution and displays HTML page with an error message.

Changelog

Version Description
3.0.0 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/wp_maintenance