ArrayIterator::key

(PHP 5 >= 5.0.0, PHP 7)

ArrayIterator::key — Return current array key

Description

public mixed ArrayIterator::key ( void )

This function returns the current array key

Parameters

This function has no parameters.

Return Values

The current array key.

Examples

Example #1 ArrayIterator::key() example


<?php
$array = array('key' => 'value');

$arrayobject = new ArrayObject($array);
$iterator = $arrayobject->getIterator();

echo $iterator->key(); //key
?>