If Iterator::valid() returns false, the foreach() loop will be terminated.
(PHP 5, PHP 7, PHP 8)
Iterator::valid — Checks if current position is valid
This method is called after Iterator::rewind() and Iterator::next() to check if the current position is valid.
Questa funzione non contiene parametri.
The return value will be casted to bool and then evaluated.
Restituisce true
in caso di successo, false
in caso di fallimento.
If Iterator::valid() returns false, the foreach() loop will be terminated.
If your class implements also ArrayAccess interface, you could use as valid() body
function valid(){
return $this->offsetExists($this->position);
}