Thinkphp5的砍价活动相关设计
#活动商品设置表：
CREATE TABLE `hp_activity_bargain` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT '主键',
`product_id` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '商品ID',
`product_name` varchar(200) COLLATE utf8_unicode_ci NOT NULL COMMENT '商品名称',
`activity_money` decimal(7,2) unsigned NOT NULL DEFAULT '0.00' COMMENT '活动价',
`bargain_section` varchar(20) COLLATE utf8_unicode_ci NOT NULL DEFAULT '' COMMENT '砍价区间',
`bargain_section2` varchar(20) COLLATE utf8_unicode_ci NOT NULL DEFAULT '' COMMENT '砍价区间2【用户线上砍价(新用户砍价区间)】', #忽略，此处是迭代后期地推而加上的
`join_count` smallint(3) unsigned NOT NULL DEFAULT '0' COMMENT '参与人数',
`product_desc` varchar(80) COLLATE utf8_unicode_ci NOT NULL COMMENT '活动商品描述',
`attr1_id` smallint(5) unsigned NOT NULL DEFAULT '0' COMMENT 'attr1属性',
`attr2_id` smallint(5) unsigned NOT NULL DEFAULT '0' COMMENT 'attr2属性',
`type` tinyint(1) NOT NULL DEFAULT '0' COMMENT '0是线上，1是地推',
PRIMARY KEY (`id`),
KEY `product_id` (`product_id`),
KEY `attr2_id` (`attr2_id`),
KEY `attr1_id` (`attr1_id`),
KEY `type` (`type`)
) ENGINE=MyISAM AUTO_INCREMENT=7 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
#用户参与进度信息表
CREATE TABLE `hp_activity_bargainirg` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT '主键ID',
`activity_bargain_id` int(10) unsigned NOT NULL COMMENT 'activity_prodcuts主键id',
`product_id` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '参与活动的商品',
`attr1_id` smallint(5) unsigned NOT NULL COMMENT 'attr1属性id',
`attr2_id` smallint(5) unsigned NOT NULL COMMENT 'attr2属性id',
`user_id` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '砍价商品发起的用户ID',
`bargain_count` smallint(5) unsigned NOT NULL DEFAULT '0' COMMENT '被砍价次数',
`deal_money` decimal(7,2) unsigned NOT NULL DEFAULT '0.00' COMMENT '最终交易价格',
`create_time` int(11) unsigned NOT NULL DEFAULT '0' COMMENT '发起时间',
`is_addorder` tinyint(1) NOT NULL DEFAULT '0' COMMENT '是否下单(0:未下单，1已下单)',
`type` tinyint(1) NOT NULL DEFAULT '0' COMMENT '0是线上，1是地推', #可以忽略，后期地推加上去的
PRIMARY KEY (`id`),
KEY `activity_bargain_id` (`activity_bargain_id`),
KEY `attr1_id` (`attr1_id`),
KEY `attr2_id` (`attr2_id`),
KEY `product_id` (`product_id`),
KEY `user_id` (`user_id`),
KEY `is_addorder` (`is_addorder`)
) ENGINE=InnoDB AUTO_INCREMENT=12 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
#参与砍价详情表
CREATE TABLE `hp_activity_bargain_list` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT '主键ID',
`bargain_id` int(10) unsigned NOT NULL DEFAULT '0' COMMENT 'activity_bargainirg表主键id',
`assistor_id` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '帮助者ID',
`create_time` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '参与时间',
`bargain_money` decimal(5,2) unsigned NOT NULL DEFAULT '0.00' COMMENT '砍掉价格',
PRIMARY KEY (`id`),
KEY `assistor_id` (`assistor_id`),
KEY `bargain_id` (`bargain_id`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
控制器几个方法：
//线上砍价活动列表
public function bargainirgAction()
{
$type = 0;
$way = input('param.way', '','string');
if (is_not_empty_string($way) && $way == 'live') {
$type = 1;
}
$pageSize = 10;
if (Request::isAjax()) {
$page = input('post.page', 0, 'intval');
$product_list = Hmodel\Activity::getActivityBargainProducts($type, $pageSize, $page * $pageSize);
if (is_not_empty_array($product_list)) {
return json_encode(['status' => 1, 'info' => $product_list]);
} else {
return json_encode(['status' => 0]);
}
}
$product_list = Hmodel\Activity::getActivityBargainProducts($type, 10, 0);
$view = new view();
$view->assign('bargainirgList',$product_list);
if ($type == 0) {
return $view->fetch('bargainirg');
} else {
return $view->fetch('bargainirg_live');
}
}
//砍价活动\商品详情\查看贡献度\请帮忙
public function bargaindetailAction()
{
$this->checkUserLogin();
$uid = session('userinfo.uid');
// $uid = 3;
$seting_id = input('param.id',0,'int');
$seting_info = Hmodel\Activity::getActivityProductsSeting($seting_id); //砍价活动商品设置
$bargain_section2 = !empty($seting_info['bargain_section2']) ? $seting_info['bargain_section2'] : 'no seting';
if (!is_not_empty_array($seting_info)) notFund();
$bargain_progress = Hmodel\Activity::returnProgressData( $seting_id, $seting_info['product_id'], $uid, $seting_info['attr1_id'],$seting_info['attr2_id'],
$seting_info['add_money'],$seting_info['type']);
if (!is_not_empty_array($bargain_progress) || $bargain_progress['user_id'] != $uid) notFund();
$username = session('userinfo.username');
$user_info = Hmodel\User::getuser_info($uid);
$invite_code = $user_info['invite_code'];
$encrypt_code = encrypt_hopeband($bargain_progress['id'] . '(&)' .$bargain_progress['activity_bargain_id'] . '(&)' .$uid . '(&)' . $invite_code . '(&)'
. $seting_info['product_id'] . '(&)' . $seting_info['activity_money'] . '(&)' . $seting_info['bargain_section'] . '(&)' . $seting_info['bargain_section2'] .'(&)'
. $seting_info['join_count'] . '(&)'. $bargain_progress['type'], 'E', 'Hp_HopeBand_Bargainirg');
//是否已经下单
// $is_addorder = Hmodel\Activity::checkIsAddorder($bargain_progress['id']);
$is_addorder = $bargain_progress['is_addorder'];
//帮助列表
$assistor_list = Hmodel\Activity::getAssistorList($bargain_progress['id']);
$view = new view();
$view->assign([
'bar_code' => $encrypt_code,
'seting_info' => $seting_info,
'bargain_progress' => $bargain_progress,
'assistor_list' => $assistor_list,
'seting' => $seting_id,
'is_addorder' => $is_addorder
]);
$view->assign();
return $view->fetch();
}
//帮忙砍价\进度\底部砍价商品列表
public function bargainirgingAction ()
{
$url = $_SERVER['REQUEST_URI'];
$encrypt_code = substr(substr($url,29),0,strpos(substr($url,29), '?invite_code'));
$bargain_param = self::retrunBargainCode($encrypt_code);
$bargain_id = $bargain_param['bargain_id'];
$bargainInfo = Hmodel\Activity::getBargainirgProgress($bargain_id);
if ( !is_not_empty_array($bargain_param) || !is_not_empty_array($bargainInfo)) {
notFund();
}
$is_addorder = $bargainInfo['is_addorder'] == 1 ? true : false;
$uid = session('userinfo.uid');
$activity_product_id = $bargain_param['activity_product_id'];
if ($bargain_param['sponsor_uid'] == $uid) {
$this->redirect('bargaindetail',['id' => $activity_product_id]);
}
$product_id = $bargain_param['product_id'];
$bargain_list = Hmodel\Activity::getActivityBargainProducts($bargain_param['type'], 999); //所有参与砍价活动的商品
foreach ($bargain_list as $v) {
if ( $v['id'] == $activity_product_id) {
$product_info = $v;
}
}
if (!is_not_empty_array($product_info)) notFund();
$type = $bargain_param['type'];
$activity_bargain_url = url('activity/bargainirg') ;
$view = new view();
$view->assign([
'bar_code' => $encrypt_code, //邀请码
'bargainInfo' => $bargainInfo, //当前砍价进度
'product_info' => $product_info, //商品详情
'bargain_list' => $bargain_list, //底部相关推荐
'is_addorder' => $is_addorder, //是否入库
'activity_bargain_url' => $activity_bargain_url
]);
return $view->fetch();
}
//ajax砍价
public function goBargainAction ()
{
if (Request::isAjax()) {
$uid = session('userinfo.uid');
$username = session('userinfo.username');
$encrypt_code = input('post.bar_code', '', 'string');
if (empty($uid) || empty($username)) {
$this->checkUserLogin();
}
$bargain_param = self::retrunBargainCode($encrypt_code);
if (!is_not_empty_array($bargain_param)) {
echo json_encode(array('status' => -3, 'info' => '不明错误,请联系客服'));die;
}
$seting_info = Hmodel\Activity::getActivityProductsSeting($bargain_param['activity_product_id']); //砍价活动商品设置
$stock = Hmodel\CategoryAttr::getproductstockbyidsonattr($seting_info['product_id'],$seting_info['attr1_id'],$seting_info['attr2_id']);
if ($stock['category_sum'] < 1) {
echo json_encode(['status' => -1, 'info' => '已抢光!']);die;
}
$userinfo = Hmodel\User::getuser_info($uid);
$register_time = $userinfo['create_time'];
$is_new_user = false; //用户状态[default:老用户]
if (($register_time + (60 * 60 * 8)) > time() && Hmodel\Activity::checkUserIsbargainEd($uid) === false) {
$is_new_user = true; //是新用户
}
$sponsor_uid = $bargain_param['sponsor_uid']; //发起者id
$bargain_id = $bargain_param['bargain_id']; //[activity_bargainirg]表主键id
$join_count = $bargain_param['join_count']; //设置砍价次数
$section = $bargain_param['bargain_section']; //砍价区间（老用户）
$section2 = $bargain_param['bargain_section2']; //砍价区间（新用户）
$type = $bargain_param['type'] == $seting_info['type'] ? $bargain_param['type'] : ''; //0：线上； 1：地推
$activity_money= $bargain_param['activity_money']; //活动最低价
if (!is_not_empty_string($type)) {
echo json_encode(array('status' => -3, 'info' => '不明错误,请联系客服'));die;
}
if ($uid == $sponsor_uid) {
echo json_encode(array('status' => -1, 'info' => '不能给自己砍价'));die;
}
$state = Hmodel\Activity::checkPartBargain($bargain_id, $uid); //是否帮伙伴砍过当前参与的进度
if ( $state !== false) {
echo json_encode(array('status' => -2, 'info' => '您已帮伙伴砍掉' . $state . '元啦，不要再砍啦!'));die;
}
if ($type == 1 && $is_new_user === false) {
echo json_encode(array('status' => -4, 'info' => '抱歉，该活动仅限新用户参加！'));die;
}
$state = Hmodel\Activity::givePartBargain($bargain_id, $sponsor_uid, $uid, $section, $section2, $join_count, $is_new_user,
$activity_money, $type);
if ($state == -1) {
echo json_encode(array('status' => -3, 'info' => '已经最低价啦，不能再砍啦！'));die;
}
if ($state === false) {
echo json_encode(array('status' => -3, 'info' => '哎呀，失败了！稍后帮我砍一次！'));die;
} else {
if ($is_new_user === true) {
echo json_encode(array('status' => 2, 'info' => '砍掉了' . $state .'元', 'deal_money' => $state));die;
} else {
echo json_encode(array('status' => 1, 'info' => '成功帮伙伴砍掉' . $state .'元!', 'deal_money' => $state));die;
}
}
}
}
//返回砍价活动相关数据
public static function retrunBargainCode( $encrypt_str = '')
{
$data = [];
$code_str = encrypt_hopeband($encrypt_str, 'D', 'Hp_HopeBand_Bargainirg');
$code_arr = explode('(&)', $code_str);
if (is_not_empty_array($code_arr) && count($code_arr) == 10) {
$data['bargain_id'] = $code_arr[0]; //砍价活动表主键id
$data['activity_product_id'] = $code_arr[1];
$data['sponsor_uid'] = $code_arr[2]; //砍价活动发起者uid
$data['sponsor_invite_code'] = $code_arr[3]; //砍价活动发起者邀请码
$data['product_id'] = $code_arr[4]; //砍价活动发起的商品id
$data['activity_money'] = $code_arr[5]; //活动最低价格
$data['bargain_section'] = $code_arr[6]; //老用户砍价区间
$data['bargain_section2'] = $code_arr[7]; //新用户砍价区间
$data['join_count'] = $code_arr[8]; //设置砍价次数
$data['type'] = $code_arr[9]; //设置砍价次数
}
return $data;
}
public function checkOrder2PayAction()
{
$this->checkUserLogin();
if (!Request::isAjax()) { notFund(); }
$seting_id = input('post.seting',0,'intval');
$user_id = session('userinfo.uid');
//拿付款的额度和商品id
$BargainPayData = Hmodel\Activity::getBargainResult2Pay($seting_id, $user_id);
$stock = Hmodel\CategoryAttr::getproductstockbyidsonattr($BargainPayData['product_id'],$BargainPayData['attr1_id'],$BargainPayData['attr2_id']);
if ($stock['category_sum'] < 1) {
return json_encode(['status' => -2, 'info' => '已抢光!']);die;
}
if ($BargainPayData['is_addorder'] == 1) {
return json_encode(['status' => -2, 'info' => '此商品已经购买过，不能重复购买！']);die;
}
if (!is_not_empty_array( $BargainPayData)) {
return json_encode(['status' => -1, 'info' => '不明错误,请联系客服!']);die;
}
$product_id = $BargainPayData['product_id'];
$attr1_name = '';
$attr2_name = '';
if (is_not_empty_array($attr1_info = Hmodel\Activity::getAttr1NameByAttrId($BargainPayData['attr1_id'], $product_id))){
$attr1_name = $attr1_info['attr'];
}
if (is_not_empty_array($attr2_info = Hmodel\Activity::getAttr2NameByAttrId($BargainPayData['attr2_id'], $product_id))){
$attr2_name = $attr2_info['attr'];
}
$data = [
'product_id' => $product_id,
'prodcut_num' => 1,
'attr1' => $attr1_name,
'attr2' => $attr2_name,
'seting_id' => $seting_id
];
return json_encode(['status' => 1, 'info' => $data]);
}
//查看砍价后的预付款订单信息
public function createActivityOrderAction ()
{
$this->checkUserLogin();
$uid = session('userinfo.uid');
$product_num = 1;
$attr1 = input("param.attr1", "" , "trim,string");
$attr2 = input("param.attr2", "" , "trim,string");
$seting_id = intval(input('param.seting_id', 0, 'intval'));
$product_id = intval(input("param.product_id", "" , "intval"));
$pay_price_money = Hmodel\Activity::returnPayMoney($product_id, $seting_id, $uid);
$type = $pay_price_money['type'];
if (!is_not_empty_array($pay_price_money)) notFund();
Cookie::set('ready_finish_bargain', encrypt_hopeband($pay_price_money['id'] . '(&)', 'E', 'hp_ready_bargain_pay'));
$pay_info = $this->calculateFromProduct($product_id, $product_num, $attr1, $attr2, $uid , $pay_price_money['deal_money'], $type);
$def_address = Hmodel\UserAddress::getDefAddress($uid);
$view = new View();
$view->assign('def_address',$def_address);
$view->assign('product_carlist_bymerchantid',$pay_info['product_carlist_bymerchantid']);
$view->assign('total_price',sprintf("%.2f",$pay_info['total_price']));
$view->assign('total_delivery',$pay_info['total_delivery']);
$view->assign('seting_id',$seting_id);
return $view->fetch('createorder');
}
Model层部分方法：
//根据主键id查询活动产品相关属性设置
public static function getActivityProductsSeting( $id = 0) {
$data = [];
if (!is_positive_integer($id)) {
return $data;
}
$sql = "SELECT a.`id`,a.`product_id`,a.`activity_money`,a.`bargain_section`,a.`join_count`,a.`product_desc`,a.`product_name`,
a.`attr1_id`,a.`attr2_id`,
b.`give_score`,b.`category_img`,b.`add_money`,b.`category_sum`
FROM `hp_activity_bargain` AS a
LEFT JOIN `hp_category_attr` AS b
ON a.`attr1_id` = b.`attr1_son_id` AND a.`attr2_id` = b.`attr2_son_id` AND a.`product_id` = b.`category_id`
WHERE a.`id` = $id
LIMIT 1";
$res = Db::query($sql);
if (is_not_empty_array($res)) {
$data = $res[0];
}
return $data;
}
//通过主键id拿砍价活动表的相关信息
public static function getBargainirgProgress($id = 0) {
$data = [];
$sql = "SELECT `id`,`activity_bargain_id`,`product_id`,`attr1_id`,`attr2_id`,`user_id`,`bargain_count`,`deal_money`,`is_addorder`
FROM `hp_activity_bargainirg`
WHERE `id` = $id LIMIT 1";
$res = self::query($sql);
if (is_not_empty_array($res)) {
$data = $res[0];
}
return $data;
}
//返回要砍
public static function returnProgressData($a_b_id = 0, $product_id = 0, $user_id = 0, $attr1_son_id = 0, $attr2_son_id = 0, $deal_money= 0){
$data = [];
$sql = "SELECT `id`,`activity_bargain_id`,`product_id`,`attr1_id`,`attr2_id`,`user_id`,`bargain_count`,`deal_money`,`is_addorder`
FROM `hp_activity_bargainirg`
WHERE `activity_bargain_id` = $a_b_id AND `attr1_id` = $attr1_son_id AND `attr2_id` = $attr2_son_id AND `product_id` = $product_id AND `user_id` = $user_id
LIMIT 1";
$res = self::query($sql);
if (is_not_empty_array($res)) {
$data = $res[0];
} else {
$data['activity_bargain_id'] = $a_b_id;
$data['product_id'] = $product_id;
$data['user_id'] = $user_id;
$data['deal_money'] = $deal_money;
$data['attr1_id'] = $attr1_son_id;
$data['attr2_id'] = $attr2_son_id;
$data['create_time'] = time();
$data['bargain_count'] = 0;
Db::name('activity_bargainirg')->insert($data);
$insertId = Db::name('activity_bargainirg')->getLastInsID();
$data['id'] = $insertId;
// $data = self::getBargainirgProgress($insert_id);
}
return $data;
}
//通过 表[activity_products] 主键id 和 user_id 拿到用户购买前要付款的额度和购买商品
public static function getBargainResult2Pay($a_b_id = 0, $user_id = 0) {
$data = [];
if ( !is_positive_integer($a_b_id) || !is_positive_integer($user_id)) {
return $data;
}
$sql = "SELECT `id`,`deal_money`,`product_id`,`attr1_id`,`attr2_id` FROM `hp_activity_bargainirg`
WHERE `activity_bargain_id` = $a_b_id AND `user_id` = $user_id
LIMIT 1";
$res = Db::query($sql);
if (is_not_empty_array($res)) {
$data = $res[0];
}
return $data;
}
//检测是否帮助伙伴砍价
//$bargain_id [activity_bargainirg]表主键id
//$assistor_id 帮助砍价者用户id
public static function checkPartBargain ($bargain_id = 0, $assistor_id = 0) {
$state = false;
if (!is_positive_integer($bargain_id) || !is_positive_integer($assistor_id)) {
return $state;
}
$sql = "SELECT `bargain_money` FROM `hp_activity_bargain_list`
WHERE `bargain_id` = $bargain_id AND `assistor_id` = $assistor_id
LIMIT 1";
$res = self::query($sql);
if (is_not_empty_array($res)) {
return $res[0]['bargain_money'];
}
return $state;
}
//查询帮忙砍价的伙伴列表
public static function getAssistorList ( $bargain_id = 0){
$data = [];
if (is_positive_integer($bargain_id) && is_positive_integer($assistor_id))
return $data;
$sql = "SELECT a.`create_time`, a.`bargain_money`, b.`nickname`, b.`headimgurl`
FROM `hp_activity_bargain_list` AS a
LEFT JOIN `hp_user_auths` AS b
ON a.`assistor_id` = b.`user_id`
WHERE a.`bargain_id` = $bargain_id
ORDER BY a.`id` DESC";
$data = self::query($sql);
return $data;
}
//拿到上次所砍掉的价格
public static function getBeforeMoney ( $bargain_id = 0, $limit = 1) {
$beforemoney_sum = 0;
$sql = "SELECT SUM(`bargain_money`) AS beforemoney_sum FROM
(SELECT `bargain_money` FROM `hp_activity_bargain_list`
WHERE `bargain_id` = $bargain_id
ORDER BY `id` DESC
LIMIT $limit) sum";
$res = Db::query($sql);
if (is_not_empty_array($res)) {
$beforemoney_sum = $res[0]['beforemoney_sum'];
}
return $beforemoney_sum;
}
/**
* 砍价相关数据操作
*$bargain_id [activity_bargainirg] 表主键id
*$sponsor_id 砍价发起者id
*$assistor_id 帮助砍价者id
*$min 最小值
*$max 最大值
*$join_count 设置要参与砍价的人数
*return bool
*/
public static function givePartBargain($bargain_id = 0, $sponsor_id = 0, $assistor_id = 0, $min = 0, $max = 0,$join_count = 0) {
$state = false;
if (is_positive_integer($assistor_id) && $bargain_id > 0 && is_positive_integer($sponsor_id)) {
$bargainirg_info = Db::name('activity_bargainirg')->find($bargain_id);
if ( !$bargainirg_info ) {
return $state;
}
$fp = fopen('./bargain_lock.txt','r');
$try = 5;
do {
$lock = flock($fp,LOCK_EX);
if(!$lock)
usleep(5000);
} while (!$lock && --$try >= 0) ;
if ($lock) {
Db::startTrans();
try {
$bargain_money = self::returnRandMoney($bargain_id, $min, $max, $join_count);
/*-------------*/
$id = 0;
$sql = "UPDATE `hp_activity_bargainirg`
SET `deal_money` = `deal_money` - $bargain_money,`bargain_count` = `bargain_count`+ 1
WHERE `id` = $bargain_id AND `user_id` = $sponsor_id AND `deal_money` > $bargain_money
AND `bargain_count` < $join_count";
$row = self::execute($sql);
if ( $row > 0) {
$insert_data = [];
$insert_data['bargain_id'] = $bargain_id;
$insert_data['assistor_id'] = $assistor_id;
$insert_data['bargain_money'] = $bargain_money;
$insert_data['create_time'] = time();
$id = Db::name('activity_bargain_list')->insert($insert_data);
}
/*-------------*/
if ($id > 0)
$state = true;
Db::commit();
}catch(\Exception $e){
$state = false;
Db::rollback();
}
flock($lock,LOCK_UN);
fclose($lock);
}
}
if ($state !== false ) {
return $bargain_money;
}
return $state;
}
//返回要砍的价格
public static function returnRandMoney ($bargain_id = 0, $min = 0 ,$max = 0, $join_count = 0 ){
$randMoney = self::randomFloat( $min, $max); //返回随机价格
$prev_Progress = self::getBargainirgProgress($bargain_id);
$prev_bargain_count = $prev_Progress['bargain_count']; //返回已经被砍价的次数
$remainder = $prev_bargain_count % 3;
$bout_count = floor($join_count / 3) * 3; //最后一轮结束的刀数 39
$last_num = $join_count - $bout_count;
$avg = ($min + $max) / 2;
$before_sum = self::getBeforeMoney($bargain_id, $remainder);
if ($prev_bargain_count >= $bout_count) {
if ($last_num == 1){
return $avg;
} elseif ($last_num == 2) {
$end = $join_count - $prev_Progress['bargain_count'] ;
if ($end == 2) {
return $randMoney;
} elseif($end == 1) {
return $avg * 2 - $before_sum;
}
}
}
// $remainder_num = $join_count % 3; //总回合数的余数
if ($remainder > 0) {
if ( $remainder == 1) {
$point = $max * 0.8; //最大额度的80%
$bout_sum = 3 * $avg;
if ($before_sum >= $point) {
$randMoney = self::randomFloat($min, ($bout_sum - $before_sum) / 2);
} else {
$randMoney = self::randomFloat(($bout_sum - $before_sum) / 2 , $point);
}
}
if ($remainder == 2) {
$round_sum_money = 3 * $avg;
$randMoney = $round_sum_money - $before_sum;
}
}
return $randMoney;
}
//拿随机价格
public static function randomFloat($min = 0, $max = 1) {
return round($min + mt_rand() / mt_getrandmax() * ($max - $min),2);
}
//拿砍价活动下所有商品
public static function getActivityBargainProducts ( $limit = 0, $offset = 0) {
$data = [];
$sql = "SELECT a.`id`,a.`product_id`,a.`activity_money`,a.`bargain_section`,a.`join_count`,a.`product_desc`,a.`product_name`,
a.`attr1_id`,a.`attr2_id`,
b.`give_score`,b.`category_img`,b.`add_money`,b.`category_sum`
FROM `hp_activity_bargain` AS a
LEFT JOIN `hp_category_attr` AS b
ON a.`attr1_id` = b.`attr1_son_id` AND a.`attr2_id` = b.`attr2_son_id` AND a.`product_id` = b.`category_id`
WHERE 1 = 1
ORDER BY a.`id` DESC
LIMIT $limit OFFSET $offset";
$data = self::query($sql);
return $data;
}