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php lottery applet

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Release： 2016-07-25 09:01:32
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This lottery applet can also be used in actual testing environments. For example, when querying test data under the in condition, you need to query 5 random IDs, and then use ab to perform stress testing.
  1. /**
  2. * "Lottery" function
  3. *
  4. * @param integer $first starting number
  5. * @param integer $last ending 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. $number = mt_rand($first, $last);
  17. if (!in_array($number, $winner))
  18. $winner[] = $number; // If the number is not in the array, replace it Add to array
  19. if (count($winner) == $total) break;
  20. }
  21. return implode(' ', $winner);
  22. }
  24. // for test
  25. echo isWinner(1, 100, 5);
  26. ?>
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php 抽奖小程序
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