1--TEST--
2SPL: RecursiveIteratorIterator::nextElement() is called when the next element is ready
3--CREDITS--
4Matt Raines matt@raines.me.uk
5#testfest London 2009-05-09
6--FILE--
7<?php
8$sample_array = array(1, 2, array(3, 4));
9$sub_iterator = new RecursiveArrayIterator($sample_array);
10
11$iterator = new RecursiveIteratorIterator($sub_iterator);
12foreach ($iterator as $element) {
13  var_dump($element);
14}
15
16class NextElementRecursiveIteratorIterator extends RecursiveIteratorIterator {
17  public function nextElement(): void {
18    echo "::nextElement() was invoked\n";
19  }
20}
21$iterator = new NextElementRecursiveIteratorIterator($sub_iterator);
22foreach ($iterator as $element) {
23  var_dump($element);
24}
25?>
26--EXPECT--
27int(1)
28int(2)
29int(3)
30int(4)
31::nextElement() was invoked
32int(1)
33::nextElement() was invoked
34int(2)
35::nextElement() was invoked
36int(3)
37::nextElement() was invoked
38int(4)
39