(PHP 8)
WeakMap::offsetExists — Checks whether a certain object is in the map
$object
Checks whether the passed object is referenced in the map.
object
Object to check for.
Returns true if the object is contained in the map, false otherwise.
true
false
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.
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.
null
