MultipleIterator::attachIterator

<?php$ait_id = new ArrayIterator(array('c1001', 'c1002', 'c1003'));$ait_name = new ArrayIterator(array('apple', 'orange', 'banana'));$ait_units = new ArrayIterator(array(756, 996, 2345));$mit = new MultipleIterator(MultipleIterator::MIT_KEYS_ASSOC);$mit->attachIterator($ait_id, "ID");$mit->attachIterator($ait_name, "NAME");$mit->attachIterator($ait_units, "UNITS");echo $mit->countIterators() . "\n"; //3if ($mit->containsIterator($ait_id)) { //true    echo "ait_id iterator attached \n";}foreach ($mit as $fruit) {    echo "<pre>";    print_r($fruit);    echo "</pre>";}?>Result:3ait_id iterator attachedArray(    [ID] => c1001    [NAME] => apple    [UNITS] => 756)Array(    [ID] => c1002    [NAME] => orange    [UNITS] => 996)Array(    [ID] => c1003    [NAME] => banana    [UNITS] => 2345)