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

Adds data to the cache, if the cache key doesn’t already exist.


Description

See also


Parameters

$key

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

$data

(Required) The data to add to the cache.

$group

(Optional) The group to add the cache to. Enables the same key to be used across groups.

Default value: ''

$expire

(Optional) When the cache data should expire, in seconds. Default 0 (no expiration).


Return

(bool) False if cache key and group already exist, true on success.


Source

File: wp-includes/cache.php

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

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


Changelog

Changelog
Version Description
WP-2.0.0 Introduced.