這篇文章主要介紹了PHP轉盤抽獎接口的實現(xiàn)方法,實例分析了隨機抽獎接口的實現(xiàn)原理與對應數(shù)據(jù)庫操作的技巧,需要的朋友可以參考下

本文實例講述了PHP轉盤抽獎接口的實現(xiàn)方法。分享給大家供大家參考。具體如下：

這里的轉盤抽獎隨機返回一個轉盤角度，概率可自己定義

lottery_get.php接口文件如下：

代碼如下:

<?php

/*session_start();

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

echo json_encode(array('status'=>'error','msg'=>'連接超時，請重新打開頁面。'));

exit;

}

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

$user_id = 1; // 測試用

// 轉盤區(qū)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元話費'),

'3' => array('min_angle'=>136,'max_angle'=>180,'prize'=>'5元話費'),

'4' => array('min_angle'=>181,'max_angle'=>225,'prize'=>'謝謝參與'),

'5' => array('min_angle'=>226,'max_angle'=>270,'prize'=>'謝謝參與'),

'6' => array('min_angle'=>271,'max_angle'=>315,'prize'=>'謝謝參與'),

'7' => array('min_angle'=>316,'max_angle'=>360,'prize'=>'謝謝參與')

);

// 選定區(qū)域

$area_selected = array();

// 隨機抽取

$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元話費

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

// 5元話費

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

// 謝謝參與

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');

// 扣除答題積分

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

if($mysqli->affected_rows){

// 有積分

// 記錄積分消耗

$mysqli->query("insert into zaszh_answer_points_consume(user_id,points_consume,consume_for,create_date) values('{$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{

// 獲獎失敗

}

}else{

// 無剩余

}

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{

// 獲獎失敗

}

}else{

// 無剩余

}

break;

case '10元話費':

$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元話費',unix_timestamp(now()))");

if($mysqli->affected_rows){

echo json_encode(array('status'=>'success','msg'=>'10元話費'));

}else{

// 獲獎失敗

}

}else{

// 無剩余

}

break;

case '5元話費':

$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元話費',unix_timestamp(now()))");

if($mysqli->affected_rows){

echo json_encode(array('status'=>'success','msg'=>'5元話費'));

}else{

// 獲獎失敗

}

}else{

// 無剩余

}

break;

default:

echo json_encode(array('status'=>'success','msg'=>'謝謝參與'));

}

}else{

// 無積分

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

}

$mysqli->close();

希望本文所述對大家的php程序設計有所幫助。

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