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

Parameters

$keyint|string

Cache key to check for existence.

$groupstring

Cache group for the key existence check.

Return

bool

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

Used by · 6

• WP_Object_Cache::add()Adds data to the cache if it doesn't already exist.
• WP_Object_Cache::decr()Decrements numeric cache item's value.
• WP_Object_Cache::delete()Removes the contents of the cache key in the group.
• WP_Object_Cache::get()Retrieves the cache contents, if it exists.
• WP_Object_Cache::incr()Increments numeric cache item's value.
• WP_Object_Cache::replace()Replaces the contents in the cache, if contents already exist.

Source

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178	protected function _exists( $key, $group ) {179		return isset( $this->cache[ $group ] ) && ( isset( $this->cache[ $group ][ $key ] ) || array_key_exists( $key, $this->cache[ $group ] ) );180	}

History

Introduced in 3.4.0. Unchanged from 6.7.7 through 7.1.0.

1. 6.7.7
2. 6.8.8
3. 6.9.7
4. 7.0.4
5. 7.1.0

Signature, return type and hooks compared across 5 parsed releases.

About this page

Parsed data

Generated from the wordpress-develop 7.0.4 tag, from src/wp-includes/class-wp-object-cache.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

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