iterator_count

(PHP 5 >= 5.1.3)

iterator_count — Count the elements in an iterator

Descrizione

int iterator_count ( IteratorAggregate $iterator )

Avviso

Questa funzione, al momento non è documentata; è disponibile soltanto la lista degli argomenti.

Count the elements in an iterator.

Elenco dei parametri

iterator: The iterator being counted.

Valori restituiti

The number of elements in iterator .

add a note User Contributed Notes
iterator_count

Micha Mech
09-May-2008 03:38


Yes, but ...



Traversable: "Abstract base interface that cannot be implemented alone. Instead it must be implemented by either IteratorAggregate or Iterator."



So You have to implement IteratorAggregate or Iterator because You can not implement Traversable.

Ard
31-Aug-2006 03:39


Note that you that the iterator parameter doesn't need to be of type Aggregate. As the spl documentation on http://www.php.net/~helly/php/ext/spl/ defines it in the following way:



    iterator_count (Traversable $it).



So you can count the number of files in a given directory quite easily:

<?php iterator_count(new DirectoryIterator('path/to/dir/'));    ?>

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iterator_to_array

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Last updated: Fri, 11 Apr 2008