EmptyIterator::valid

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

EmptyIterator::validChecks whether the current element is valid

说明

public EmptyIterator::valid(): false

Checks whether the current element is valid.

注意:

The EmptyIterator is always empty and will never have a valid value. The return value is always false.

参数

此函数没有参数。

返回值

false

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