ArrayIterator::key
(PHP 5 >= 5.0.0, PHP 7)
ArrayIterator::key — Return current array key
인수
이 함수는 인수가 없습니다.
반환값
The current array key.
예제
Example #1 ArrayIterator::key() example
<?php
$array = array('key' => 'value');
$arrayobject = new ArrayObject($array);
$iterator = $arrayobject->getIterator();
echo $iterator->key(); //key
?>
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