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

• WP_Object_Cache::set()

$key int|string Required

What to call the contents in the cache.

$data mixed Required

The contents to store in the cache.

$group string Optional

Where to group the cache contents. Default 'default'.

Default: 'default'

$expire int Optional

When to expire the cache contents, in seconds.
Default 0 (no expiration).

bool True if contents were replaced, false if original value does not exist.

File: wp-includes/class-wp-object-cache.php. View all references

public function replace( $key, $data, $group = 'default', $expire = 0 ) {
	if ( ! $this->is_valid_key( $key ) ) {
		return false;
	}

	if ( empty( $group ) ) {
		$group = 'default';
	}

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

	if ( ! $this->_exists( $id, $group ) ) {
		return false;
	}

	return $this->set( $key, $data, $group, (int) $expire );
}