WordPress\AiClientDependencies\Psr\SimpleCache

CacheInterface::has │ public │ WP 1.0

Determines whether an item is present in the cache.

NOTE: It is recommended that has() is only to be used for cache warming type purposes and not to be used within your live applications operations for get/set, as this method is subject to a race condition where your has() will return true and immediately after, another script can remove it making the state of your app out of date.

Method of the class: CacheInterface{}

No Hooks.

Returns

true|false.

Usage

$CacheInterface = new CacheInterface();
$CacheInterface->has( $key );
$key(string) (required)
The cache item key.

CacheInterface::has() code WP 7.0

wp-includes/php-ai-client/third-party/Psr/SimpleCache/CacheInterface.php 
public function has($key);