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Lucky Wheel - Lottery program implemented in jQuery PHP - under improvement

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Jul 06, 2016 pm 01:28 PM

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<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>小雨在線網站自營銷研究</title>
    <link rel="stylesheet" type="text/css" href="css/style.css"/>
    <!--<script type="text/javascript" src="js/jquery-1.7.2.min.js"></script>-->
    <script src="//cdn.bootcss.com/jquery/3.0.0/jquery.min.js"></script>
    <script type="text/javascript" src="js/jQueryRotate.2.2.js"></script>
    <script type="text/javascript" src="js/jquery.easing.min.js"></script>


    <script type="text/javascript">


        $(function () {
            $("#startbtn").click(function () {
                lottery();
            });
        });
        function lottery() {
            $.ajax({
                type: 'POST',
                url: 'data.php',
                dataType: 'json',
                cache: false,
                error: function () {
                    alert('出錯了！');
                    return false;
                },
                success: function (json) {
                    $("#startbtn").unbind('click').css("cursor", "default");
                    var a = json.angle; //角度
                    var p = json.prize; //獎項
                    $("#startbtn").rotate({
                        duration: 3000, //轉動時間
                        angle: 0,
                        animateTo: 1800 + a, //轉動角度
                        easing: $.easing.easeOutSine,
                        callback: function () {
                            var con = confirm('恭喜你，中得' + p + '\n還要再來一次嗎？');
                            if (con) {
                                lottery();
                            } else {
                                return false;
                            }
                        }
                    });
                }
            });
        }


    </script>


</head>
<body class="keBody">
<h1 class="keTitle">小雨在線網站自營銷研究</h1>

<div class="kePublic">
    <!--效果html開始-->
    <div class="demo">
        <div id="disk"></div>
        <div id="start"><img src="images/start.png" id="startbtn"></div>
    </div>
    <!--效果html結束-->
</div>


</body>
</html>

-----------data.php----------------------------------
<?php
/**
 * Created by 小雨在線
 * User: 飛天
 * Date: 2016/6/22 0022
 * Time: 下午 4:27
 */

$prize_arr = array(
    '0' => array('id' => 1, 'min' => 1, 'max' => 29, 'prize' => '一等獎', 'v' => 1),
    '1' => array('id' => 2, 'min' => 302, 'max' => 328, 'prize' => '二等獎', 'v' => 2),
    '2' => array('id' => 3, 'min' => 242, 'max' => 268, 'prize' => '三等獎', 'v' => 5),
    '3' => array('id' => 4, 'min' => 182, 'max' => 208, 'prize' => '四等獎', 'v' => 7),
    '4' => array('id' => 5, 'min' => 122, 'max' => 148, 'prize' => '五等獎', 'v' => 10),
    '5' => array('id' => 6, 'min' => 62, 'max' => 88, 'prize' => '六等獎', 'v' => 25),
    '6' => array('id' => 7, 'min' => array(32, 92, 152, 212, 272, 332), 'max' => array(58, 118, 178, 238, 298, 358), 'prize' => '七等獎', 'v' => 50)
);



function getRand($proArr)
{
    $result = '';

    //概率數(shù)組的總概率精度

    $proSum = array_sum($proArr);

    //概率數(shù)組循環(huán)
    foreach ($proArr as $key => $proCur) {
        $randNum = mt_rand(1, $proSum);
        if ($randNum <= $proCur) {
            $result = $key;
            break;
        } else {
            $proSum -= $proCur;
        }
    }
    unset ($proArr);

    return $result;
}


foreach ($prize_arr as $key => $val) {
    $arr[$val['id']] = $val['v'];
}

$rid = getRand($arr); //根據(jù)概率獲取獎項id

$res = $prize_arr[$rid - 1]; //中獎項
$min = $res['min'];
$max = $res['max'];
if ($res['id'] == 7) { //七等獎
    $i = mt_rand(0, 5);
    $result['angle'] = mt_rand($min[$i], $max[$i]);
} else {
    $result['angle'] = mt_rand($min, $max); //隨機生成一個角度
}
$result['prize'] = $res['prize'];

echo json_encode($result);

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