CachingIterator
PHP Manual

CachingIterator::key

(PHP 5, PHP 7)

CachingIterator::keyReturn the key for the current element

Description

public scalar CachingIterator::key ( void )
Warning

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

This method may return a key for the current element.

Parameters

This function has no parameters.


CachingIterator
PHP Manual