Weakref::valid

(PECL weakref >= 0.1.0)

Weakref::valid — Checks whether the object referenced still exists

说明

public Weakref::valid ( ) : bool

Checks whether the object referenced still exists.

参数

此函数没有参数。

返回值

Returns TRUE if the object still exists and is thus still accessible via Weakref::get(), FALSE otherwise.

参见

  • Weakref::get() - Returns the object pointed to by the weak reference