shutdown_action_hook()

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.

Runs just before PHP shuts down execution.

Source

File: wp-includes/load.php 

function shutdown_action_hook() {
	/**
	 * Fires just before PHP shuts down execution.
	 *
	 * @since 1.2.0
	 */
	do_action( 'shutdown' );

	wp_cache_close();
}

Uses

Uses Description
wp-includes/cache.php: wp_cache_close()

Closes the cache.
wp-includes/load.php: shutdown

Fires just before PHP shuts down execution.
wp-includes/plugin.php: do_action()

Calls the callback functions that have been added to an action hook.

Changelog

Version Description
1.2.0 Introduced.

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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/shutdown_action_hook