--- /dev/null
+<?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.
+ */
+
+namespace Symfony\Component\Validator\Tests\Fixtures;
+
+/**
+ * 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);
+ }
+}