(PHP 5 >= 5.3.0, PHP 7)
An Iterator that sequentially iterates over all attached iterators
$flags
= MultipleIterator::MIT_NEED_ALL|MultipleIterator::MIT_KEYS_NUMERIC
)MultipleIterator::MIT_NEED_ANY
Do not require all sub iterators to be valid in iteration.
MultipleIterator::MIT_NEED_ALL
Require all sub iterators to be valid in iteration.
MultipleIterator::MIT_KEYS_NUMERIC
Keys are created from the sub iterators position.
MultipleIterator::MIT_KEYS_ASSOC
Keys are created from sub iterators associated information.