php man page for iterator_count

ITERATOR_COUNT(3)							 1							 ITERATOR_COUNT(3)

iterator_count - Count the elements in an iterator

SYNOPSIS
       int iterator_count (Traversable	$iterator)

DESCRIPTION
	Count the elements in an iterator.

PARAMETERS
	      o $iterator
		- The iterator being counted.

RETURN VALUES
	The number of elements in $iterator.

EXAMPLES
       Example #1

	      iterator_count(3) example

	      <?php
	      $iterator = new ArrayIterator(array('recipe'=>'pancakes', 'egg', 'milk', 'flour'));
	      var_dump(iterator_count($iterator));
	      ?>

	      The above example will output:

	      int(4)

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