WeakMap::valid

(PECL weakref >= 0.2.0)

WeakMap::valid — Returns whether the iterator is still on a valid map element

说明

public WeakMap::valid ( void ) : bool

Returns whether the iterator is still on a valid map element.

参数

此函数没有参数。

返回值

Returns TRUE if the iterator is on a valid element that can be accessed, FALSE otherwise.