大转盘，设定了华为手机必须是9001的时候才可以抽出，总抽奖次数10000名

// 大转盘

class Dazhuanpan

{

private $prize_arr; //奖品信息

private $proArr; //数量数组

private $user_num; //参与人总和

function __construct()

{

$con = mysqli_connect('localhost','root','root','ceshi'); //链接数据

// 查询参与用户数

$user_num_sqlu = "SELECT COUNT(id) FROM dazhuanpan_user";

$user_re = mysqli_query($con,$user_num_sqlu);

$user_num = mysqli_fetch_row($user_re)[0];

$this->user_num = $user_num;

// 查询奖品信息

$sql = "SELECT * FROM dazhuanpan_jiangpin";

$result = mysqli_query($con,$sql);

$data = mysqli_fetch_all($result,MYSQLI_ASSOC);

mysqli_free_result($result);

$this->prize_arr = $data;

mysqli_close($con);

$proArr = '';

// 遍历出数量数组

foreach ($data as $k=>$v)

{

// 查询奖品信息 如果大于9001的时候 加入第二名奖项;

if($k == 1)

{

if($user_num > 9001)

{

$proArr[] = $v['shuliang'];

}else{

$proArr[]=0;

}

}else{

$proArr[] = $v['shuliang'];

}

}

$this->proArr = $proArr;

}

/**

* 大转盘计算

* @return [type] [description]

*/

private function dzsuanfa()

{

$data = '';

$proSum = array_sum($this->proArr); //概率数组的总概率精度

foreach ($this->proArr as $k => $v) { //概率数组循环

$randNum = mt_rand(1, $proSum);

if ($randNum <= $v) {

$data = $id_jiangpin = $k; //中奖对应的ID

break;

} else {

$proSum -= $v;

}

}

unset($proArr);

// 数量减一

$this->prize_arr[$data]['shuliang']--;

$shuliang = $this->prize_arr[$data]['shuliang'];

// 修改库存

$con = mysqli_connect('localhost','root','root','ceshi'); //链接数据

$id_jiangpin++;

$sql = "UPDATE dazhuanpan_jiangpin SET shuliang = '$shuliang' WHERE id = '$id_jiangpin';";

// 添加中奖用户信息 (这里应该查询是否已经中奖中奖不给)

$sql .= "INSERT INTO dazhuanpan_user (phone,jiangpin_id) VALUE ('".$_GET["phone"]."','".$data."')";

$result = mysqli_multi_query($con,$sql);

if ($result)

{

// mysqli_free_result($result);

mysqli_close($con);

}else{

$data = 'false';

}

return $data;

}

/**

* 查询用户

* @return [type] [description]

*/

private function user()

{

$con = mysqli_connect('localhost','root','root','ceshi'); //链接数据

$sql = "SELECT * FROM dazhuanpan_user";

$result = mysqli_query($con,$sql);

$data = mysqli_fetch_all($result,MYSQLI_ASSOC);

mysqli_free_result($result);

// mysqli_close($con);

return $data;

}

/**

* 公共接口

* @return [type] [description]

*/

public function api()

{

// 次数达到10000 活动终止

if ($this->user_num == 10000)

{

echo '活动总次数到了！';die;

}elseif(array_sum($this->proArr) <= 0)

{

echo '奖品已经发放完毕！';die;

}

$dzsuanfa = $this->dzsuanfa();

if($dzsuanfa == false)

{

echo '错误';die;

}

// 奖品ID

// $jiang_id = $this->dzsuanfa();

// echo $jiang_id;die;

// 奖品信息

var_dump($this->prize_arr[$dzsuanfa]);

echo '
';

echo '恭喜获得'.$this->prize_arr[$dzsuanfa]['jiangpin'];

// 用户信息

echo "

";

var_dump($this->user());

}

}

$dz_class = new Dazhuanpan();

$dz_class->api();

mysql

CREATE TABLE `dazhuanpan_jiangpin` (

`id` int(11) NOT NULL AUTO_INCREMENT,

`jiangpin` varchar(255) NOT NULL,

`min` int(11) NOT NULL,

`max` int(11) NOT NULL,

`shuliang` int(11) unsigned zerofill NOT NULL,

`zhuangtai` int(11) NOT NULL DEFAULT '1',

PRIMARY KEY (`id`)

) ENGINE=MyISAM AUTO_INCREMENT=7 DEFAULT CHARSET=utf8;

CREATE TABLE `dazhuanpan_user` (

`id` int(11) NOT NULL AUTO_INCREMENT,

`phone` varchar(255) NOT NULL,

`jiangpin_id` varchar(11) NOT NULL,

PRIMARY KEY (`id`)

) ENGINE=MyISAM AUTO_INCREMENT=10001 DEFAULT CHARSET=utf8;DELIMITER //

CREATE PROCEDURE text2()

BEGIN

declare p decimal (10) default 0 ;

dd:loop

INSERT INTO dazhuanpan_user(id,phone,jiangpin_id)VALUE

('','18710733333','5'),

('','18710733333','5'),

('','18710733333','5'),

('','18710733333','5'),

('','18710733333','5'),

('','18710733333','5'),

('','18710733333','5'),

('','18710733333','5'),

('','18710733333','5'),

('','18710733333','5');

set p = p+10;

if p = 10000 then leave dd;

END if;

END loop dd;

END

//