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Simple random lottery function written in php

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Release： 2016-07-25 08:43:09
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  2. /**
  3. * "Lottery" function
  4. *
  5. * @param integer $first starting number
  6. * @param integer $last ending number
  7. * @param integer $total number of winners
  8. *
  9. * @return string
  10. *
  11. */
  12. function isWinner($first, $last, $total)
  13. {
  14. $winner = array();
  15. for ($i=0;;$ i++)
  16. {
  17. $number = rand($first, $last);
  18. if (!in_array($number, $winner))
  19. $winner[] = $number; // If the number is not in the array, replace it Add to array
  20. if (count($winner) == $total) break;
  21. }
  22. return implode(' ', $winner);
  23. }
  24. // for test
  25. echo isWinner(1, 100, 30);
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php编写的简单随机抽奖函数
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