Iterator::valid

(PHP 5, PHP 7)

Iterator::validChecks if current position is valid

Opis

abstract public Iterator::valid ( void ) : bool

This method is called after Iterator::rewind() and Iterator::next() to check if the current position is valid.

Parametry

Ta funkcja nie posiada parametrów.

Zwracane wartości

The return value will be casted to boolean and then evaluated. Zwraca TRUE w przypadku powodzenia, FALSE w przypadku błędu.

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User Contributed Notes 2 notes

up
5
seva dot lapsha at gmail dot com
11 years ago
If Iterator::valid() returns false, the foreach() loop will be terminated.
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4
Voitcus at gmail dot com
7 years ago
If your class implements also ArrayAccess interface, you could use as valid() body

function valid(){   
   return $this->offsetExists($this->position);
}
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