Community Learn Tools Library Leisure
search
English
Home > Backend Development > PHP Tutorial > The core code of the PHP lottery program (to draw three lucky viewers)

The core code of the PHP lottery program (to draw three lucky viewers)

WBOY
Release： 2016-07-25 08:58:41
Original
1680 people have browsed it

  3. /**

  4. * php lottery program core code
  5. * edit bbs.it-home.org
  6. */
  7. $sql = “select distinct(***),username from *** where daystatus=0 and ***= '{$yesterday}' and daystatus=0″ ;
  8. $res = mysql_query( $sql, $g_mysql ) or sys_exit( “The system is busy, please try again later”, mysql_error() ) ;
  9. $users = mysql_fetch_all( $ res ) ; //Get all participant information, each person's information is unique
  10. $award_users = array() ;//Create a winning array
  11. if ( count( $users ) else {
  12. $nums = get_award3( $users ) ; / /Execute the lottery program and return the subscript of the winner
  13. echo "The list of winners is as follows:" . ”

  14. ” ;

  15. foreach ( $nums as $key => $value ) {
  16. $ award_users[] = $users[$value] ;
  17. echo "uid:" . $users[$value]['uid'] . " Nickname: " . $users[$value]['username'] "
  18. " ;
  19. $uids[$key] = $users[$value]['uid'] ;
  20. }
  21. }
  22. $_SESSION['users'] = ” ;
  23. $_SESSION['users'] = $award_users ; //Backend Use
  24. echo <<Lottery information to enter the database

  25. EOF;

  26. function get_award3( $users ) {//Lottery function, for To prevent duplication, there is an additional judgment
  27. $count = count( $users ) ;
  28. $i = 0 ;
  29. $result = array() ;
  30. while ( $i < 3 ) {
  31. $j = rand( 0, $count – 1 ) ;
  32. if ( ! in_array( $j, $result ) ) {
  33. $result[$i] = $j ;
  34. $i++ ;
  35. }
  36. }
  37. return $result ;
  38. }
  39. ?>

Copy the code

You can refer to the implementation ideas of the above code. Friends who are interested can implement a complete PHP lottery program by themselves.



Related labels：
php抽奖程序(抽取三名幸运观众)的核心代码
source：php.cn
Previous article：Reference for learning about PHP's __call Next article：PHP simple parameter filtering code learning
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Latest Issues
function_exists() cannot determine the custom function Function test () {return true;} if (function_exists ('test')) {echo "test is function...
From 2024-04-29 11:01:01
0
3
2276
How to display the mobile version of Google Chrome Hello teacher, how can I change Google Chrome into a mobile version?
From 2024-04-23 00:22:19
0
11
2409
The child window operates the parent window, but the output does not respond. The first two sentences are executable, but the last sentence cannot be implemented.
From 2024-04-19 15:37:47
0
1
2027
There is no output in the parent window document.onclick = function(){ window.opener.document.write('I am the output of the child ...
From 2024-04-18 23:52:34
0
1
1914
Where is the courseware about CSS mind mapping? Courseware
From 2024-04-16 10:10:18
0
0
1981
Related Topics
More>
Popular Recommendations
Popular Tutorials
More>
Related Tutorials
Popular Recommendations
Latest courses
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template