PHP 8.1.0 RC 4 available for testing

MultipleIterator::key

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

MultipleIterator::keyGets the registered iterator instances

说明

public MultipleIterator::key(): array|false

Get the registered iterator instances key() result.

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

An array of all registered iterator instances, or false if no sub iterator is attached.

错误/异常

A LogicException if mode MIT_NEED_ALL is set, and at least one attached iterator is not valid.

Calling this method from foreach triggers warning "Illegal type returned".

参见

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