Php/docs/arrayiterator.key
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ArrayIterator::key
(PHP 5, PHP 7)
ArrayIterator::key — Return 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?>