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wp_cache_get_last_changed()

wp_cache_get_last_changed( string $group ): string

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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 );
}

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UsesDescription
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 byDescription
WP_User_Query::generate_cache_key()wp-includes/class-wp-user-query.php

Generate cache key.

WP_Term_Query::generate_cache_key()wp-includes/class-wp-term-query.php

Generate cache key.

WP_Query::generate_cache_key()wp-includes/class-wp-query.php

Generates cache key.

_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_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.

get_page_by_path()wp-includes/post.php

Retrieves a page given its path.

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Changelog

VersionDescription
4.7.0Introduced.

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