WeakMap
PHP Manual

WeakMap::offsetExists

(PECL weakref >= 0.2.0)

WeakMap::offsetExistsChecks whether a certain object is in the map

Description

public bool WeakMap::offsetExists ( object $object )

Checks whether the passed object is referenced in the map.

Parameters

object

Object to check for.

Return Values

Returns TRUE if the object is contained in the map, FALSE otherwise.


WeakMap
PHP Manual