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

/**
* php lottery program core code
* edit bbs.it-home.org
*/
$sql = “select distinct(***),username from *** where daystatus=0 and ***= '{$yesterday}' and daystatus=0″ ;
$res = mysql_query( $sql, $g_mysql ) or sys_exit( “The system is busy, please try again later”, mysql_error() ) ;
$users = mysql_fetch_all( $ res ) ; //Get all participant information, each person's information is unique
$award_users = array() ;//Create a winning array
if ( count( $users ) else {
$nums = get_award3( $users ) ; / /Execute the lottery program and return the subscript of the winner
echo "The list of winners is as follows:" . ”
” ;
foreach ( $nums as $key => $value ) {
$ award_users[] = $users[$value] ;
echo "uid:" . $users[$value]['uid'] . " Nickname: " . $users[$value]['username'] "
" ;
$uids[$key] = $users[$value]['uid'] ;
}
}
$_SESSION['users'] = ” ;
$_SESSION['users'] = $award_users ; //Backend Use
echo <<Lottery information to enter the database
EOF;
function get_award3( $users ) {//Lottery function, for To prevent duplication, there is an additional judgment
$count = count( $users ) ;
$i = 0 ;
$result = array() ;
while ( $i < 3 ) {
$j = rand( 0, $count – 1 ) ;
if ( ! in_array( $j, $result ) ) {
$result[$i] = $j ;
$i++ ;
}
}
return $result ;
}
?>

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