class_parents
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.
iterator_count
(PHP 5 >= 5.1.3)
iterator_count — Count the elements in an iterator
Description
int iterator_count
( IteratorAggregate $iterator
)
Warning
This function is currently not documented; only its argument list is available.
Count the elements in an iterator.
Parameters
- iterator
-
The iterator being counted.
Return Values
The number of elements in iterator .
add a note
User Contributed Notesiterator_count
Micha Mech
09-May-2008 11:38
09-May-2008 11:38
Ard
31-Aug-2006 11:39
31-Aug-2006 11:39
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/')); ?>