EmptyIterator::key

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

EmptyIterator::key — The key() method

Description

public EmptyIterator::key(): mixed

This function must not be called. It throws an exception upon access.

Warning

This function is currently not documented; only its argument list is available.

Parameters

This function has no parameters.

Errors/Exceptions

Throws an Exception if called.

Return Values

No value is returned.