PHP 5.4.31 Released

Iterator::valid

(PHP 5 >= 5.0.0)

Iterator::validChecks if current position is valid

Descrizione

abstract public boolean Iterator::valid ( void )

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

Elenco dei parametri

Questa funzione non contiene parametri.

Valori restituiti

The return value will be casted to boolean and then evaluated. Restituisce TRUE in caso di successo, FALSE in caso di fallimento.

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User Contributed Notes 2 notes

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3
seva dot lapsha at gmail dot com
4 years ago
If Iterator::valid() returns false, the foreach() loop will be terminated.
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1
Voitcus at gmail dot com
1 year 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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