FilterIterator::valid

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

FilterIterator::valid — Check whether the current element is valid

说明

public FilterIterator::valid(): bool

Checks whether the current element is valid.

注意:
The standard implementation of this function will initially return false until the inner iterator is advanced to the first accepted element.

参数

此函数没有参数。

返回值

true if the current element is valid, otherwise false