WP_Object_Cache::get( int|string $key, string $group = 'default', bool $force = false, bool $found = null )

Retrieves the cache contents, if it exists.

Description Description

The contents will be first attempted to be retrieved by searching by the key in the cache group. If the cache is hit (success) then the contents are returned.

On failure, the number of cache misses will be incremented.

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Parameters Parameters


(int|string) (Required) The key under which the cache contents are stored.


(string) (Optional) Where the cache contents are grouped.

Default value: 'default'


(bool) (Optional) Unused. Whether to force an update of the local cache from the persistent cache.

Default value: false


(bool) (Optional) Whether the key was found in the cache (passed by reference). Disambiguates a return of false, a storable value.

Default value: null

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Return Return

(mixed|false) The cache contents on success, false on failure to retrieve contents.

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Source Source

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

	public function get( $key, $group = 'default', $force = false, &$found = null ) {
		if ( empty( $group ) ) {
			$group = 'default';

		if ( $this->multisite && ! isset( $this->global_groups[ $group ] ) ) {
			$key = $this->blog_prefix . $key;

		if ( $this->_exists( $key, $group ) ) {
			$found             = true;
			$this->cache_hits += 1;
			if ( is_object( $this->cache[ $group ][ $key ] ) ) {
				return clone $this->cache[ $group ][ $key ];
			} else {
				return $this->cache[ $group ][ $key ];

		$found               = false;
		$this->cache_misses += 1;
		return false;

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Changelog Changelog

Version Description
2.0.0 Introduced.

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