wp_cache_get_last_changed( string $group ): string

Gets last changed date for the specified cache group.

Parameters

$groupstringrequired: Where the cache contents are grouped.

Return

string UNIX timestamp with microseconds representing when the group was last changed.

Source

function wp_cache_get_last_changed( $group ) {
	$last_changed = wp_cache_get( 'last_changed', $group );

	if ( $last_changed ) {
		return $last_changed;
	}

	return wp_cache_set_last_changed( $group );
}

View all references View on Trac View on GitHub

Uses	Description
wp_cache_set_last_changed()`wp-includes/functions.php`	Sets last changed date for the specified cache group to now.
wp_cache_get()`wp-includes/cache.php`	Retrieves the cache contents from the cache by key and group.

Used by	Description
WP_User_Query::get_cache_last_changed()`wp-includes/class-wp-user-query.php`	Retrieves the last changed cache timestamp for users and optionally posts.
_find_post_by_old_slug()`wp-includes/query.php`	Find the post ID for redirecting an old slug.
_find_post_by_old_date()`wp-includes/query.php`	Find the post ID for redirecting an old date.
WP_Term_Query::get_terms()`wp-includes/class-wp-term-query.php`	Retrieves the query results.
WP_Network_Query::get_networks()`wp-includes/class-wp-network-query.php`	Gets a list of networks matching the query vars.
WP_Site_Query::get_sites()`wp-includes/class-wp-site-query.php`	Retrieves a list of sites matching the query vars.
WP_Comment_Query::fill_descendants()`wp-includes/class-wp-comment-query.php`	Fetch descendants for located comments.
WP_Comment_Query::get_comments()`wp-includes/class-wp-comment-query.php`	Get a list of comments matching the query vars.
wp_get_archives()`wp-includes/general-template.php`	Displays archive links based on type and format.
WP_Query::get_posts()`wp-includes/class-wp-query.php`	Retrieves an array of posts based on query variables.
get_objects_in_term()`wp-includes/taxonomy.php`	Retrieves object IDs of valid taxonomy and term.
get_adjacent_post()`wp-includes/link-template.php`	Retrieves the adjacent post.
count_user_posts()`wp-includes/user.php`	Gets the number of posts a user has written.
count_many_users_posts()`wp-includes/user.php`	Gets the number of posts written by a list of users.
get_page_by_path()`wp-includes/post.php`	Retrieves a page given its path.

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Changelog

Version	Description
4.7.0	Introduced.

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