WeakRef
PHP Manual

Weakref::valid

(PECL weakref >= 0.1.0)

Weakref::validChecks whether the object referenced still exists

설명

public bool Weakref::valid ( void )

Checks whether the object referenced still exists.

인수

이 함수는 인수가 없습니다.

반환값

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

참고


WeakRef
PHP Manual