PHP新写的大转盘抽奖源码

PHP新写的大转盘抽奖源码

中奖概率

抽奖大转盘演示：http://www.sucaihuo.com/php/3301.html
function getRand($proArr, $proCount) { 
    $result = ''; 
    $proSum = 0; 
    foreach ($proCount as $key => $val) { 
        if ($val <= 0) { 
            continue; 
        } else { 
            $proSum = $proSum + $proArr[$key]; 
        } 
    } 
    foreach ($proArr as $key => $proCur) { 
        if ($proCount[$key] <= 0) { 
            continue; 
        } else { 
            $randNum = mt_rand(1, $proSum); 
            if ($randNum <= $proCur) { 
                $result = $key; 
                break;