Get current array key with ArrayIterator::key in PHP

Description

The following code shows how to get current array key with ArrayIterator::key.

Example

<?php//from   www .j a  v  a2  s  .  co m
$array = array('key' => 'value');

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

echo $iterator->key(); //key
?>

The code above generates the following result.