- var_dump: documentation ( source)
<?php
$array_one = array('key1' => 'value1');
$array_two = array('key1' => 'value1');
var_dump($array_one === $array_two);
foreach ($array_two['key2'] as &$entry)
{
}
var_dump($array_one === $array_two);
var_dump($array_two);