wp_cache_set( int|string $key, mixed $data, string $group = '', int $expire )

Saves the data to the cache.

Description

Differs from wp_cache_add() and wp_cache_replace() in that it will always write data.

See also

Parameters

$key

(Required) The cache key to use for retrieval later.

$data

(Required) The contents to store in the cache.

$group

(Optional) Where to group the cache contents. Enables the same key to be used across groups.

Default value: ''

$expire

(Optional) When to expire the cache contents, in seconds.<br> Default 0 (no expiration).

Return

(bool) True on success, false on failure.

Source

File: wp-includes/cache.php 

function wp_cache_set( $key, $data, $group = '', $expire = 0 ) {
	global $wp_object_cache;

	return $wp_object_cache->set( $key, $data, $group, (int) $expire );
}

Expand Source Code View on GitHub

Related

Uses

Uses
Uses Description
wp-includes/class-wp-object-cache.php: WP_Object_Cache::set()

Sets the data contents into the cache.

Used By

Used By
Used By Description
wp-includes/post.php: wp_cache_set_posts_last_changed()

Sets the last changed time for the ‘posts’ cache group.
wp-includes/user.php: wp_cache_set_users_last_changed()

Sets the last changed time for the ‘users’ cache group.
wp-includes/comment.php: wp_cache_set_comments_last_changed()

Sets the last changed time for the ‘comment’ cache group.
wp-includes/taxonomy.php: wp_cache_set_terms_last_changed()

Sets the last changed time for the ‘terms’ cache group.
wp-includes/ms-site.php: wp_cache_set_sites_last_changed()

Sets the last changed time for the ‘sites’ cache group.
wp-includes/general-template.php: wp_get_archives()

Displays archive links based on type and format.
wp-includes/general-template.php: get_calendar()

Displays calendar with days that have posts as links.
wp-includes/class-wp-query.php: WP_Query::get_posts()

Retrieves an array of posts based on query variables.
wp-includes/query.php: _find_post_by_old_slug()

Find the post ID for redirecting an old slug.
wp-includes/query.php: _find_post_by_old_date()

Find the post ID for redirecting an old date.
wp-includes/comment.php: clean_comment_cache()

Removes a comment from the object cache.
wp-includes/comment.php: wp_count_comments()

Retrieves the total comment counts for the whole site or a single post.
wp-includes/comment.php: get_lastcommentmodified()

Retrieves the date the last comment was modified.
wp-includes/bookmark.php: get_bookmarks()

Retrieves the list of bookmarks.
wp-includes/class-wp-embed.php: WP_Embed::find_oembed_post_id()

Finds the oEmbed cache post ID for a given cache key.
wp-includes/link-template.php: get_adjacent_post()

Retrieves the adjacent post.
wp-includes/class-wp-site.php: WP_Site::get_details()

Retrieves the details for this site.
wp-includes/ms-network.php: clean_network_cache()

Removes a network from the object cache.
wp-includes/ms-site.php: clean_blog_cache()

Clean the blog cache
wp-includes/ms-blogs.php: get_blog_details()

Retrieves the details for a blog from the blogs table and blog options.
wp-includes/option.php: get_network_option()

Retrieves a network’s option value based on the option name.
wp-includes/option.php: add_network_option()

Adds a new network option.
wp-includes/option.php: delete_network_option()

Removes a network option by name.
wp-includes/option.php: update_network_option()

Updates the value of a network option that was already added.
wp-includes/option.php: set_site_transient()

Sets/updates the value of a site transient.
wp-includes/option.php: set_transient()

Sets/updates the value of a transient.
wp-includes/option.php: update_option()

Updates the value of an option that was already added.
wp-includes/option.php: add_option()

Adds a new option.
wp-includes/option.php: delete_option()

Removes option by name. Prevents removal of protected WordPress options.
wp-includes/option.php: get_option()

Retrieves an option value based on an option name.
wp-includes/class-wp-customize-manager.php: WP_Customize_Manager::find_changeset_post_id()

Finds the changeset post ID for a given changeset UUID.
wp-includes/class-wp-term-query.php: WP_Term_Query::get_terms()

Retrieves the query results.
wp-includes/post.php: _get_last_post_time()

Gets the timestamp of the last time any post was modified or published.
wp-includes/post.php: clean_post_cache()

Will clean the post in the cache.
wp-includes/post.php: get_pages()

Retrieves an array of pages (or hierarchical post type items).
wp-includes/post.php: get_page_by_path()

Retrieves a page given its path.
wp-includes/post.php: wp_count_posts()

Counts number of posts of a post type and if user has permissions to view.
wp-includes/post.php: wp_count_attachments()

Counts number of attachments for the mime type(s).
wp-includes/ms-functions.php: wpmu_create_blog()

Creates a site.
wp-includes/ms-functions.php: get_blog_id_from_url()

Gets a blog’s numeric ID from its URL.
wp-includes/taxonomy.php: is_object_in_term()

Determines if the given object is associated with any of the given terms.
wp-includes/taxonomy.php: clean_term_cache()

Removes all of the term IDs from the cache.
wp-includes/taxonomy.php: get_objects_in_term()

Retrieves object IDs of valid taxonomy and term.
wp-includes/functions.php: wp_cache_get_last_changed()

Gets last changed date for the specified cache group.
wp-includes/functions.php: is_blog_installed()

Determines whether WordPress is already installed.
wp-admin/includes/class-wp-privacy-requests-table.php: WP_Privacy_Requests_Table::get_request_counts()

Count number of requests for each status.
wp-admin/includes/plugin.php: get_plugins()

Checks the plugins directory and retrieve all plugin files with plugin data.
wp-admin/includes/class-wp-ms-sites-list-table.php: WP_MS_Sites_List_Table::column_users()

Handles the users column output.
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Changelog

Changelog
Version Description
2.0.0 Introduced.