MultipleIterator::key

(PHP 5 >= 5.3.0, PHP 7)

MultipleIterator::key — Gets the registered iterator instances

public MultipleIterator::key ( void ) : array

Get the registered iterator instances key() result.

Warning

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

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".