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微信红包和抽奖代码分享

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Release: 2016-06-07 11:34:57
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具体思路是,定义总钱数和人数,然后最小值为默认0.01元,然后进行循环,设置安全值是为了让后面的人都能拿到钱。仅自己尝试,有需求的可自己深入研究
微信红包代码:<?php <br /> 02<br>         // 微信红包算法<br> 03<br>          header("content-type:text/html;charset=utf-8");<br> 04<br>         $sum = 10;  //总价钱<br> 05<br>         $num = 8 ;  //人数<br> 06<br>         $min = 0.01;    //最少值<br> 07<br>         for($i=1;$i 08<br>             $row = ($sum-($num-$i)*$min)/($num-$i);// 安全值<br> 09<br>             $money = mt_rand($min*100,$row*100)/100;<br> 10<br>             $sum -= $money;<br> 11<br>             echo '第'.$i.'人,领取'.$money.'元,剩下'.$sum.'元<br>';<br> 12<br>         }<br> 13<br>         echo '第'.$num.'人,领取'.$sum.'元,剩下'.$sum.'元';<br> 14<br>     ?> 抽奖代码<?php <br /> 02<br>         // 抽奖<br> 03<br>      header("content-type:text/html;charset=utf-8");<br> 04<br>         function get_rand($arr){<br> 05<br>             $arr_sum = array_sum($arr);<br> 06<br>             $arr_rand = mt_rand(1,$arr_sum);<br> 07<br>             foreach($arr as $key => $arr_num){<br> 08<br>                 $arr_sum -= $arr_num;<br> 09<br>                 if($arr_rand>$arr_sum){<br> 10<br>                     return $key;<br> 11<br>                 }<br> 12<br>             }<br> 13<br>         }<br> 14<br>         $p = array(<br> 15<br>             '0' => array('id'=>1,'info'=>'一等奖','v'=>1),<br> 16<br>             '1' => array('id'=>2,'info'=>'二等奖','v'=>5),<br> 17<br>             '2' => array('id'=>3,'info'=>'三等奖','v'=>10),<br> 18<br>             '3' => array('id'=>4,'info'=>'四等奖','v'=>34)<br> 19<br>             );<br> 20<br>         foreach($p as $key => $value){<br> 21<br>             $arr[$value['id']] = $value['v'];<br> 22<br>         }<br> 23<br>         $rid = get_rand($arr);<br> 24<br>         $res['yes'] = $p[$rid-1]['info'];<br> 25<br>         unset ($p[$rid-1]) ;<br> 26<br>         shuffle ($p);<br> 27<br>         for($i=0;$i<count></count> 28<br>             $pr[]= $p[$i]['info'];<br> 29<br>         }<br> 30<br>         $res['no'] = $pr;<br> 31<br>         var_dump($res);<br> 32<br>     ?>

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