(PECL weakref >= 0.2.0)
WeakMap::offsetSet — Updates the map with a new key-value pair
Updates the map with a new key-value pair. If the key already existed in the map, the old value is replaced with the new.
object
The object serving as key of the key-value pair.
value
The arbitrary data serving as value of the key-value pair.
No value is returned.