A simple random draw function written by PHP

Source: Internet
Author: User
  1. !--? php /**
  2. * "Lottery" function
  3. *
  4. * @param integer $first start number
  5. * @param integer $last end number
  6. * @param integer $total number of winners
  7. *
  8. * @return String
  9. *
  10. */
  11. function Iswinner ($first, $last, $total)
  12. {
  13. $winner = Array ();
  14. for ($i = 0;; $i + +)
  15. {
  16. $number = rand ($first, $last);
  17. if (!in_array ($number, $winner))
  18. $winner [] = $number;//If there is no number in the array, add it to the array
  19. if (count ($winner) = = $total) break;
  20. }
  21. return implode (', $winner);
  22. }
  23. //For test
  24. Echo iswinner (1, +);
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