--TEST--
SPL: RecursiveIteratorIterator and beginChildren/endChildren
--FILE--
<?php

class MyRecursiveArrayIterator extends RecursiveArrayIterator
{
    function valid(): bool
    {
        if (!parent::valid())
        {
            echo __METHOD__ . " = false\n";
            return false;
        }
        else
        {
            return true;
        }
    }

    function getChildren(): ?RecursiveArrayIterator
    {
        echo __METHOD__ . "\n";
        return parent::getChildren();
    }
}

class RecursiveArrayIteratorIterator extends RecursiveIteratorIterator
{
    function rewind(): void
    {
        echo __METHOD__ . "\n";
        parent::rewind();
    }

    function valid(): bool
    {
        echo __METHOD__ . "\n";
        return parent::valid();
    }

    function current(): mixed
    {
        echo __METHOD__ . "\n";
        return parent::current();
    }

    function key(): mixed
    {
        echo __METHOD__ . "\n";
        return parent::key();
    }

    function next(): void
    {
        echo __METHOD__ . "\n";
        parent::next();
    }

    function beginChildren(): void
    {
        echo __METHOD__ . "(".$this->getDepth().")\n";
    }

    function endChildren(): void
    {
        echo __METHOD__ . "(".$this->getDepth().")\n";
    }
}

foreach(new RecursiveArrayIteratorIterator(new MyRecursiveArrayIterator(array("a", array("ba", array("bba", "bbb"), array(array("bcaa"))), array("ca"), "d"))) as $k=>$v)
{
    echo "$k=>$v\n";
}
?>
--EXPECT--
RecursiveArrayIteratorIterator::rewind
RecursiveArrayIteratorIterator::valid
RecursiveArrayIteratorIterator::current
RecursiveArrayIteratorIterator::key
0=>a
RecursiveArrayIteratorIterator::next
MyRecursiveArrayIterator::getChildren
RecursiveArrayIteratorIterator::beginChildren(1)
RecursiveArrayIteratorIterator::valid
RecursiveArrayIteratorIterator::current
RecursiveArrayIteratorIterator::key
0=>ba
RecursiveArrayIteratorIterator::next
MyRecursiveArrayIterator::getChildren
RecursiveArrayIteratorIterator::beginChildren(2)
RecursiveArrayIteratorIterator::valid
RecursiveArrayIteratorIterator::current
RecursiveArrayIteratorIterator::key
0=>bba
RecursiveArrayIteratorIterator::next
RecursiveArrayIteratorIterator::valid
RecursiveArrayIteratorIterator::current
RecursiveArrayIteratorIterator::key
1=>bbb
RecursiveArrayIteratorIterator::next
MyRecursiveArrayIterator::valid = false
RecursiveArrayIteratorIterator::endChildren(2)
MyRecursiveArrayIterator::getChildren
RecursiveArrayIteratorIterator::beginChildren(2)
MyRecursiveArrayIterator::getChildren
RecursiveArrayIteratorIterator::beginChildren(3)
RecursiveArrayIteratorIterator::valid
RecursiveArrayIteratorIterator::current
RecursiveArrayIteratorIterator::key
0=>bcaa
RecursiveArrayIteratorIterator::next
MyRecursiveArrayIterator::valid = false
RecursiveArrayIteratorIterator::endChildren(3)
MyRecursiveArrayIterator::valid = false
RecursiveArrayIteratorIterator::endChildren(2)
MyRecursiveArrayIterator::valid = false
RecursiveArrayIteratorIterator::endChildren(1)
MyRecursiveArrayIterator::getChildren
RecursiveArrayIteratorIterator::beginChildren(1)
RecursiveArrayIteratorIterator::valid
RecursiveArrayIteratorIterator::current
RecursiveArrayIteratorIterator::key
0=>ca
RecursiveArrayIteratorIterator::next
MyRecursiveArrayIterator::valid = false
RecursiveArrayIteratorIterator::endChildren(1)
RecursiveArrayIteratorIterator::valid
RecursiveArrayIteratorIterator::current
RecursiveArrayIteratorIterator::key
3=>d
RecursiveArrayIteratorIterator::next
MyRecursiveArrayIterator::valid = false
RecursiveArrayIteratorIterator::valid
MyRecursiveArrayIterator::valid = false