pyrange.php

<?php
/**
 * @see {@link http://docs.python.org/release/1.5.1p1/tut/range.html}
 * @param integer start
 * @param integer end
 * @param integer step
 * @return array
 */
function pyrange($start, $end = null, $step = null)
{
    $range = array();
    $step = $step?: 1;
    $length = $start;

    if (func_num_args() == 1) {
        $start = 0;
    } else {
        $length = ceil(($end - $start)/$step);
    }

    for ($i = 0; $i < $length; ++$i, $start += $step) {
        $range[] = $start;
    }

    return $range;
}

use.php

<?php
var_dump(pyrange(10));
/* output
array(10) {
  [0] =>
  int(0)
  [1] =>
  int(1)
  [2] =>
  int(2)
  [3] =>
  int(3)
  [4] =>
  int(4)
  [5] =>
  int(5)
  [6] =>
  int(6)
  [7] =>
  int(7)
  [8] =>
  int(8)
  [9] =>
  int(9)
}
*/

var_dump(pyrange(5, 10));
/*output
array(5) {
  [0] =>
  int(5)
  [1] =>
  int(6)
  [2] =>
  int(7)
  [3] =>
  int(8)
  [4] =>
  int(9)
}
*/

var_dump(pyrange(0, 10, 3));
/*output
array(4) {
  [0] =>
  int(0)
  [1] =>
  int(3)
  [2] =>
  int(6)
  [3] =>
  int(9)
}
*/

var_dump(pyrange(-10, -100, -30));
/*output
array(3) {
  [0] =>
  int(-10)
  [1] =>
  int(-40)
  [2] =>
  int(-70)
}
*/