Online PHP editor | refs for Zvj6r

<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ /** * This class is a hand written simplified version of PHP native `ArrayObject` * class, to show that it behaves differently than the PHP native implementation. */ class CustomArrayObject implements ArrayAccess, IteratorAggregate, Countable, Serializable { private $array; public function __construct(array $array = null) { $this->array = $array ?: array(); } public function offsetExists($offset) { return array_key_exists($offset, $this->array); } public function offsetGet($offset) { return $this->array[$offset]; } public function offsetSet($offset, $value) { if (null === $offset) { $this->array[] = $value; } else { $this->array[$offset] = $value; } } public function offsetUnset($offset) { unset($this->array[$offset]); } public function getIterator() { return new ArrayIterator($this->array); } public function count() { return count($this->array); } public function serialize() { return serialize($this->array); } public function unserialize($serialized) { $this->array = (array) unserialize((string) $serialized); } } $array = array('foo' => 'bar', 'nulled' => null); $native = new ArrayObject($array); $custom = new CustomArrayObject($array); error_reporting(-1); $a = array_key_exists('missing', $custom); var_dump(isset($custom['missing']) || array_key_exists('missing', $custom));