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WP_Object_Cache::_exists()

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

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

Parameters

$keyint|stringrequired
Cache key to check for existence.
$groupstringrequired
Cache group for the key existence check.

Return

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

Source

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

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Used byDescription
WP_Object_Cache::replace()wp-includes/class-wp-object-cache.php

Replaces the contents in the cache, if contents already exist.

WP_Object_Cache::get()wp-includes/class-wp-object-cache.php

Retrieves the cache contents, if it exists.

WP_Object_Cache::delete()wp-includes/class-wp-object-cache.php

Removes the contents of the cache key in the group.

WP_Object_Cache::incr()wp-includes/class-wp-object-cache.php

Increments numeric cache item’s value.

WP_Object_Cache::decr()wp-includes/class-wp-object-cache.php

Decrements numeric cache item’s value.

WP_Object_Cache::add()wp-includes/class-wp-object-cache.php

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

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Changelog

VersionDescription
3.4.0Introduced.

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