Php/docs/weakmap.count

• PHP Manual
• WeakMap
• Counts the number of live entries in the map

WeakMap::count

(PECL weakref >= 0.2.0)

WeakMap::count — Counts the number of live entries in the map

说明

public WeakMap::count ( ) : int

Counts the number of live entries in the map.

参数

此函数没有参数。

返回值

Returns the number of live entries in the map.