MultipleIterator::key
(PHP 5 >= 5.3.0, PHP 7)
MultipleIterator::key — Gets the registered iterator instances
Description
public MultipleIterator::key ( ) : array
Get the registered iterator instances key() result.
Warning
This function is currently not documented; only its argument list is available.
Parameters
This function has no parameters.
Return Values
An array of all registered iterator instances, or false if no sub iterator is attached.
Errors/Exceptions
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".
See Also
- MultipleIterator::current() - Gets the registered iterator instances
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https://www.php.net/manual/en/multipleiterator.key.php