WP_Object_Cache::_exists( int|string $key, string $group )

Serves as a utility function to determine whether a key exists in the cache.

Parameters

$key: (int|string) (Required) Cache key to check for existence.
$group: (string) (Required) Cache group for the key existence check.

Return

(bool) Whether the key exists in the cache for the given group.

Source

File: wp-includes/class-wp-object-cache.php

protected function _exists( $key, $group ) {
		return isset( $this->cache[ $group ] ) && ( isset( $this->cache[ $group ][ $key ] ) || array_key_exists( $key, $this->cache[ $group ] ) );
	}

Used By

Used By	Description
wp-includes/class-wp-object-cache.php: WP_Object_Cache::decr()	Decrements numeric cache item’s value.
wp-includes/class-wp-object-cache.php: WP_Object_Cache::delete()	Removes the contents of the cache key in the group.
wp-includes/class-wp-object-cache.php: WP_Object_Cache::get()	Retrieves the cache contents, if it exists.
wp-includes/class-wp-object-cache.php: WP_Object_Cache::incr()	Increments numeric cache item’s value.
wp-includes/class-wp-object-cache.php: WP_Object_Cache::replace()	Replaces the contents in the cache, if contents already exist.
wp-includes/class-wp-object-cache.php: WP_Object_Cache::add()	Adds data to the cache if it doesn’t already exist.

Changelog

Version	Description
3.4.0	Introduced.

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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/classes/wp_object_cache/_exists