PHP Manual
WeakMap
Checks whether a certain object is in the map

WeakMap::offsetExists

(PECL weakref >= 0.2.0)

WeakMap::offsetExists — Checks whether a certain object is in the map

说明

public WeakMap::offsetExists ( object $object ) : bool

Checks whether the passed object is referenced in the map.

参数

object: Object to check for.

返回值

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

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