The method description looks like it requires a parameter, but it is actually optional:
$iter= new ArrayIterator();
$iter['bacon'] = 'tasty';
(PHP 5, PHP 7, PHP 8)
ArrayIterator::__construct — Construct an ArrayIterator
Constructs an ArrayIterator object.
Diese Funktion ist bis jetzt nicht dokumentiert. Es steht nur die Liste der Parameter zur Verfügung.
array
The array or object to be iterated on.
flags
Flags to control the behaviour of the ArrayIterator object. See ArrayIterator::setFlags().
The method description looks like it requires a parameter, but it is actually optional:
$iter= new ArrayIterator();
$iter['bacon'] = 'tasty';