iterator_count

(PHP 5 >= 5.1.3)

iterator_count — Count the elements in an iterator

Описание

int iterator_count ( IteratorAggregate $iterator )

Предупреждение

В момента тази функция не е документирана; наличен е единствено списък с аргументите.

Count the elements in an iterator.

Параметри

iterator: The iterator being counted.

Връщани стойности

The number of elements in iterator .

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iterator_count

Micha Mech
09-May-2008 12:38


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 12:39


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, 27 Jun 2008