MultipleIterator::key
(PHP 5 >= 5.3.0, PHP 7)
MultipleIterator::key — Gets the registered iterator instances
说明
public MultipleIterator::key
( void
) : array
Get the registered iterator instances key() result.
Warning
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".