ArrayIterator::key
PHP function
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(PHP 5, PHP 7, PHP 8)
Return current array key
Description
ArrayIterator::key(): string|int|null
This function returns the current array key
Parameters Parameters
Return Values
The current array key.
Examples
ArrayIterator::key() example
php
<?php
$array = array('key' => 'value');
$arrayobject = new ArrayObject($array);
$iterator = $arrayobject->getIterator();
echo $iterator->key(); //key
?>