php man page for range

RANGE(3)								 1								  RANGE(3)

range - Create an array containing a range of elements

SYNOPSIS
       array range (mixed  $start, mixed  $end, [number  $step = 1])

DESCRIPTION
	Create an array containing a range of elements.

PARAMETERS
	      o $start
		- First value of the sequence.

	      o $end
		- The sequence is ended upon reaching the $end value.

	      o $step
		-  If  a $step value is given, it will be used as the increment between elements in the sequence. $step should be given as a posi-
		tive number. If not specified, $step will default to 1.

RETURN VALUES
	Returns an array of elements from $start to $end, inclusive.

EXAMPLES
       Example #1

	      range(3) examples

	      <?php
	      // array(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
	      foreach (range(0, 12) as $number) {
		  echo $number;
	      }

	      // The step parameter
	      // array(0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100)
	      foreach (range(0, 100, 10) as $number) {
		  echo $number;
	      }

	      // Usage of character sequences
	      // array('a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i');
	      foreach (range('a', 'i') as $letter) {
		  echo $letter;
	      }
	      // array('c', 'b', 'a');
	      foreach (range('c', 'a') as $letter) {
		  echo $letter;
	      }
	      ?>

NOTES
       Note

	       Character sequence values are limited to a length of one. If a length greater than one is entered,  only  the  first  character	is
	      used.

SEE ALSO
       shuffle(3), array_fill(3), foreach.

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