php man page for next

NEXT(3) 								 1								   NEXT(3)

next - Advance the internal array pointer of an array

SYNOPSIS
       mixed next (array  &$array)

DESCRIPTION
       next(3) behaves like current(3), with one difference. It advances the internal array pointer one place forward before returning the element
       value. That means it returns the next array value and advances the internal array pointer by one.

PARAMETERS
	      o $array
		- The array being affected.

RETURN VALUES
	Returns the array value in the next place that's pointed to by the internal array pointer, or FALSE if there are no more elements.

       Warning

	      This function may return Boolean FALSE, but may also return a non-Boolean value which evaluates to FALSE. Please read the section on
	      Booleans for more information. Use the === operator for testing the return value of this function.

EXAMPLES
       Example #1

	      Example use of next(3) and friends

	      <?php
	      $transport = array('foot', 'bike', 'car', 'plane');
	      $mode = current($transport); // $mode = 'foot';
	      $mode = next($transport);    // $mode = 'bike';
	      $mode = next($transport);    // $mode = 'car';
	      $mode = prev($transport);    // $mode = 'bike';
	      $mode = end($transport);	   // $mode = 'plane';
	      ?>

NOTES
       Note

	       You  won't be able to distinguish the end of an array from a boolean FALSE element. To properly traverse an array which may contain
	      FALSE elements, see the each(3) function.

SEE ALSO
       current(3), end(3), prev(3), reset(3), each(3).

PHP Documentation Group 														   NEXT(3)