PHP转盘抽奖接口实例

本文实例讲述了PHP转盘抽奖接口的实现方法。分享给大家供大家参考。具体如下：

这里的转盘抽奖随机返回一个转盘角度，概率可自己定义

lottery_get.php接口文件如下：

<?php  

/*session_start(); 

if(!isset($_SESSION['zaszh_user_id'])){ 

    echo json_encode(array('status'=>'error','msg'=>'连接超时，请重新打开页面。')); 

    exit; 

} 

$user_id = $_SESSION['zaszh_user_id'];*/  

  

$user_id = 1; // 测试用  

  

// 转盘区域  

$arr_area = array(  

    '0' => array('min_angle'=>1,'max_angle'=>45,'prize'=>'小米'),

    '1' => array('min_angle'=>46,'max_angle'=>90,'prize'=>'拍立得'),

    '2' => array('min_angle'=>91,'max_angle'=>135,'prize'=>'10元话费'), 

    '3' => array('min_angle'=>136,'max_angle'=>180,'prize'=>'5元话费'), 

    '4' => array('min_angle'=>181,'max_angle'=>225,'prize'=>'谢谢参与'),

    '5' => array('min_angle'=>226,'max_angle'=>270,'prize'=>'谢谢参与'),

    '6' => array('min_angle'=>271,'max_angle'=>315,'prize'=>'谢谢参与'),

    '7' => array('min_angle'=>316,'max_angle'=>360,'prize'=>'谢谢参与')  

);  

  

// 选定区域  

$area_selected = array();  

// 随机抽取  

$num_rand = mt_rand(1,10);  

switch($num_rand){  

    // 小米  

    case 1: $area_selected = $arr_area[0]; break;  

    // 拍立得  

    case 2: $area_selected = $arr_area[1]; break;  

    // 10元话费  

    case 3: $area_selected = $arr_area[2]; break;  

    // 5元话费  

    case 4: $area_selected = $arr_area[3]; break;  

    // 谢谢参与  

    default:  

        switch(mt_rand(1,4)){  

            case 1: $area_selected = $arr_area[4]; break;  

            case 2: $area_selected = $arr_area[5]; break;  

            case 3: $area_selected = $arr_area[6]; break;  

            case 4: $area_selected = $arr_area[7]; break;  

        }  

        break;  

}  

echo $area_selected['prize'];  

  

require('connect_database.php');  

// 扣除答题积分  

$mysqli->query("update zaszh_user set answer_points=answer_points-5 where id='{$user_id}' and answer_points>=5");  

if($mysqli->affected_rows){  

    // 有积分  

    // 记录积分消耗  

    $mysqli->query("insert into zaszh_answer_points_consume(user_id,points_consume,consume_for,create_date) values('{$user_id}',5,'lottery',unix_timestamp(now()))");  

    switch($area_selected['prize']){  

        case '小米':  

            $mysqli->query("update zaszh_prize_surplus set surplus=surplus-1 where prize='小米' and surplus>0");  

            if($mysqli->affected_rows){  

                // 有剩余  

                $mysqli->query("insert into zaszh_award(user_id,prize,create_date) values('{$user_id}','小米',unix_timestamp(now()))");  

                if($mysqli->affected_rows){  

                    echo json_encode(array('status'=>'success','msg'=>'小米'));  

                }else{  

                    // 获奖失败  

                }  

            }else{  

                // 无剩余  

            }  

            break;  

        case '拍立得':  

            $mysqli->query("update zaszh_prize_surplus set surplus=surplus-1 where prize='拍立得' and surplus>0");  

            if($mysqli->affected_rows){  

                // 有剩余  

                $mysqli->query("insert into zaszh_award(user_id,prize,create_date) values('{$user_id}','拍立得',unix_timestamp(now()))");  

                if($mysqli->affected_rows){  

                    echo json_encode(array('status'=>'success','msg'=>'拍立得'));  

                }else{  

                    // 获奖失败  

                }  

            }else{  

                // 无剩余  

            }  

            break;  

        case '10元话费':  

            $mysqli->query("update zaszh_telephone_charge_surplus set charge_surplus=charge_surplus-10 where date=substring(now(),1,10) and charge_surplus>=10");  

            if($mysqli->affected_rows){  

                // 有剩余  

                $mysqli->query("insert into zaszh_award(user_id,prize,create_date) values('{$user_id}','10元话费',unix_timestamp(now()))");  

                if($mysqli->affected_rows){  

                    echo json_encode(array('status'=>'success','msg'=>'10元话费'));  

                }else{  

                    // 获奖失败  

                }  

            }else{  

                // 无剩余  

            }  

            break;  

        case '5元话费':  

            $mysqli->query("update zaszh_telephone_charge_surplus set charge_surplus=charge_surplus-5 where date=substring(now(),1,10) and charge_surplus>=5");  

            if($mysqli->affected_rows){  

                // 有剩余  

                $mysqli->query("insert into zaszh_award(user_id,prize,create_date) values('{$user_id}','5元话费',unix_timestamp(now()))");  

                if($mysqli->affected_rows){  

                    echo json_encode(array('status'=>'success','msg'=>'5元话费'));  

                }else{  

                    // 获奖失败  

                }  

            }else{  

                // 无剩余  

            }  

            break;  

        default:  

            echo json_encode(array('status'=>'success','msg'=>'谢谢参与'));  

    }  

}else{  

    // 无积分  

    echo json_encode(array('status'=>'error','msg'=>'您的积分不足。'));  

}  

$mysqli->close();

希望本文所述对大家的php程序设计有所帮助。