- var_dump: documentation ( source)
- key: documentation ( source)
- current: documentation ( source)
<?php
echo "-- ArrayObject\n";
$iterator = (new ArrayObject([]))->getIterator();
var_dump($iterator->current());
var_dump($iterator->key());
echo "\n-- array\n";
$array = [];
var_dump(current($array));
var_dump(key($array));