- var_dump: documentation ( source)
- iterator_to_array: documentation ( source)
<?php
$a = new SplPriorityQueue();
$a->insert(new stdClass, 3);
$a->insert(array(), 2);
var_dump(count($a));
var_dump(iterator_to_array($a));
var_dump(count($a));
var_dump(iterator_to_array($a));