<?php

 /**

  * 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<$win1;$i++)

     {

         $return[] = 1;

     }

     for ($j=0;$j<$win2;$j++)

     {

         $return[] = 2;

     }

     for ($m=0;$m<$win3;$m++)

     {

         $return[] = 3;

     }

     for ($n=0;$n<$other;$n++)

     {

         $return[] = '谢谢惠顾';

     }

     shuffle($return);

     return $return[array_rand($return)];

 }

 $data = getReward();

 echo $data;

 ?>