RecursiveIteratorIterator::callHasChildren

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

RecursiveIteratorIterator::callHasChildren — Has children

说明

public RecursiveIteratorIterator::callHasChildren(): ?bool

Called for each element to test whether it has children.

警告

本函数还未编写文档，仅有参数列表。

参数

此函数没有参数。

返回值

null if the element has children, otherwise false