作者:mobiledu2502885243 | 来源:互联网 | 2023-09-18 11:50
这篇文章主要介绍PHP如何实现计算抽奖概率算法,文中介绍的非常详细,具有一定的参考价值,感兴趣的小伙伴们一定要看完!
具体如下:
$proCur) {
$randNum = mt_rand(1, $proSum);
if ($randNum <= $proCur) {
$result = $key;
break;
} else {
$proSum -= $proCur;
}
}
unset ($proArr);
return $result;
}
$prize_arr = array(
&#39;0&#39; => array(&#39;id&#39;=>1,&#39;prize&#39;=>&#39;家电&#39;,&#39;v&#39;=>2),
&#39;1&#39; => array(&#39;id&#39;=>2,&#39;prize&#39;=>&#39;数码相机&#39;,&#39;v&#39;=>5),
&#39;2&#39; => array(&#39;id&#39;=>3,&#39;prize&#39;=>&#39;iPad&#39;,&#39;v&#39;=>13),
&#39;3&#39; => array(&#39;id&#39;=>4,&#39;prize&#39;=>&#39;LED显示器&#39;,&#39;v&#39;=>15),
&#39;4&#39; => array(&#39;id&#39;=>5,&#39;prize&#39;=>&#39;U盘&#39;,&#39;v&#39;=>25),
&#39;5&#39; => array(&#39;id&#39;=>6,&#39;prize&#39;=>&#39;键盘&#39;,&#39;v&#39;=>30),
&#39;6&#39; => array(&#39;id&#39;=>7,&#39;prize&#39;=>&#39;鼠标垫&#39;,&#39;v&#39;=>10),
);
foreach ($prize_arr as $key => $val) {
$arr[$val[&#39;id&#39;]] = $val[&#39;v&#39;];
}
$rid = get_rand($arr);
$res[&#39;yes&#39;] = $prize_arr[$rid-1][&#39;prize&#39;];
unset($prize_arr[$rid-1]);
shuffle($prize_arr);
$prize_arrcount = count($prize_arr);
for($i=0;$i<$prize_arrcount;$i++){
$pr[] = $prize_arr[$i][&#39;prize&#39;];
}
$res[&#39;no&#39;] = $pr;
//抽奖结果
$ro = $res[&#39;yes&#39;];
print_r($ro);
?>
运行结果:
iPad
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