WeakMap::offsetExists

(PHP 8)

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

Description

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

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.

Notes

Note:
Like isset(), this method returns false if the value associated with object is null, even though the object is still contained in the map.