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php实现可以设置中奖概率的抽奖程序代码分享

WBOY
WBOYOriginal
2016-06-06 20:25:29922browse

这篇文章主要介绍了一个抽奖程序,要求一等奖的中奖概率是0.12%,二等奖中奖概率是3%,三等奖中奖概率是12%,其他中奖概率是都是谢谢惠顾

复制代码 代码如下:


/**
 * 抽奖
 * @param int $total
 */
function getReward($total=1000)
{
 $win1 = floor((0.12*$total)/100);
 $win2 = floor((3*$total)/100);
 $win3 = floor((12*$total)/100);
 $other = $total-$win1-$win2-$win3;
 $return = array();
 for ($i=0;$i {
  $return[] = 1;
 }
 for ($j=0;$j {
  $return[] = 2;
 }
 for ($m=0;$m {
  $return[] = 3;
 }
 for ($n=0;$n {
  $return[] = '谢谢惠顾';
 }
 shuffle($return);
 return $return[array_rand($return)];
}

$data = getReward();
echo $data;
?>

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