Online PHP editor | refs for Gi6SO

<?php class Collection extends ArrayObject { private $data; function __construct() { $this->data = array(); parent::__construct($this->data); } function offsetGet($index) { echo __METHOD__ . "($index)\n"; return parent::offsetGet($index); } function offsetSet($index, $value) { echo __METHOD__ . "(" . (is_null($index) ? "NULL" : $index) . ",$value)\n"; parent::offsetSet($index, $value); } } echo "\n\nInitiate Obj\n"; $arrayObj = new Collection(); echo "Assign values\n"; $arrayObj[] = "foo"; var_dump($arrayObj[0]); $arrayObj[] = "bar"; var_dump($arrayObj[0]); var_dump($arrayObj[1]); $arrayObj["foo"] = "baz"; var_dump($arrayObj["foo"]); print_r($arrayObj); var_dump(count($arrayObj));