Online PHP editor | refs for S8I7Z

<?php class MyCollection extends ArrayObject { public function updateIndexes() { $this->exchangeArray(array_values($this->getArrayCopy())); } } $collection = new MyCollection([ 'first', 'second', 'third', ]); var_dump($collection); $collection->offsetUnset(1); var_dump($collection); $collection->updateIndexes(); var_dump($collection);