php 大转盘抽奖
包在文件中 lottery.zip
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<meta name="keywords" content="html5,本地存储" />
<meta name="description" content="Helloweba演示平台，演示XHTML、CSS、jquery、PHP案例和示例" />
<title>幸运大转盘-jQuery+PHP实现的抽奖程序</title>
<link rel="stylesheet" type="text/css" href="../css/main.css" />
<style type="text/css">
.demo{width:417px; height:417px; position:relative; margin:50px auto}
#disk{width:417px; height:417px; background:url(disk.jpg) no-repeat}
#start{width:163px; height:320px; position:absolute; top:46px; left:130px;}
#start img{cursor:pointer}
</style>
<script type="text/javascript" src="http://xhdoctor.ci.com/static/js/jquery-3.1.0.min.js"></script>
<script type="text/javascript" src="jQueryRotate.2.2.js"></script>
<script type="text/javascript" src="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('出错了！');
return false;
},
success:function(json){
$("#startbtn").unbind('click').css("cursor","default");
var a = json.angle; //角度
var p = json.prize; //奖项
$("#startbtn").rotate({
duration:3000, //转动时间
angle: 0,
animateTo:1800+a, //转动角度
easing: $.easing.easeOutSine,
callback: function(){
var con = confirm('恭喜你，中得'+p+'\n还要再来一次吗？');
if(con){
lottery();
}else{
return false;
}
}
});
}
});
}
</script>
</head>
<body>
<div id="main">
<div class="msg"></div>
<div class="demo">
<div id="disk"></div>
<div id="start"><img src="start.png" id="startbtn"></div>
</div>
<div class="ad_demo"><script src="/js/ad_js/ad_demo.js" type="text/javascript"></script></div><br/>
</div>
<!--<p id="stat"><script type="text/javascript" src="http://js.tongji.linezing.com/1870888/tongji.js"></script></p>-->
</body>
</html>
<?php
$prize_arr = array(
'0' => array('id'=>1,'min'=>1,'max'=>29,'prize'=>'一等奖','v'=>1),
'1' => array('id'=>2,'min'=>302,'max'=>328,'prize'=>'二等奖','v'=>2),
'2' => array('id'=>3,'min'=>242,'max'=>268,'prize'=>'三等奖','v'=>5),
'3' => array('id'=>4,'min'=>182,'max'=>208,'prize'=>'四等奖','v'=>7),
'4' => array('id'=>5,'min'=>122,'max'=>148,'prize'=>'五等奖','v'=>10),
'5' => array('id'=>6,'min'=>62,'max'=>88,'prize'=>'六等奖','v'=>25),
'6' => array('id'=>7,'min'=>array(32,92,152,212,272,332), 'max'=>array(58,118,178,238,298,358),'prize'=>'七等奖','v'=>50)
);
// 1 2 5 7 10 25 50
function getRand($proArr) {
$result = '';
//概率数组的总概率精度 v值的和
$proSum = array_sum($proArr);
//概率数组循环
foreach ($proArr as $key => $proCur) {
//1 - 100 之间的随机数
$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); //根据概率获取奖项id
$res = $prize_arr[$rid-1]; //中奖项
$min = $res['min'];
$max = $res['max'];
if($res['id']==7){ //七等奖
$i = mt_rand(0,5);
$result['angle'] = mt_rand($min[$i],$max[$i]);
}else{
$result['angle'] = mt_rand($min,$max); //随机生成一个角度
}
$result['prize'] = $res['prize'];
echo json_encode($result);
