PHP实现抽奖功能实例代码

在项目开发中经常会遇到花钱抽奖类型的需求。但是老板总是担心用户用小钱抽到大奖。这样会导致项目亏损。下边这段代码可以有效制止抽奖项目亏钱。

个人奖池：

语言：thinkphp redis mysql

表：desire抽奖商品表 desire_log用户抽奖奖品表 ur_desire_log用户抽奖记录表 desire_risk抽奖风控表

需求：用户奖池分为进行中奖池 和已完成奖池 当用户抽到大奖后 用户个人奖池重置 否则将继续抽奖 最后一次抽奖必中大奖 通过风控金额来判断用户是否可以抽大奖

　　当所有用户已完成的抽奖 盈利大于风控金额的时候可以让用户抽大奖 否则用户抽不到大奖

<?php 　　　//抽奖接口public function desire(){$urdata = $this->urssiondata();///用户的唯一标识$time = time();$this->limit_reward_time($urdata['id'], $time);///限制抽奖间隔时间 防止被恶意刷奖品//活动开启开关$num = input('num/d');if (!$num) {output('1008', '参数错误');}if ($num!=1){if ($num !=10){if ($num !=100){output('1008', '参数错误');}el{$nd = $this->draw($num);}}el{$nd = $this->draw($num);}}el{$nd = $this->draw($num);}if ($nd != '金币不足') {output('200', '列表', $nd);} el {output('1012', $nd);}}　　/////抽奖核心　　public function draw($num){$urdata = $this->urssiondata();$resultnd = cache::get('奖池名称加上用户的唯一标识，确保一人一奖池' . $urdata['id']);//获取个人奖池if (!empty($resultnd)) {$urredis = unrialize(cache::get('newdesiredraw' . $urdata['id']));///将奖池序列化} el {$urredis = '';///当前用户不存在奖池}　　　　 ///查询当前用户的金币$desirediamonds = db::connect('db_qmconfig')->name('ur_money')->where(['uid' => $urdata['id']])->field('diamonds')->find();$ndnum = $num;if ($desirediamonds['diamonds'] < $num) {return ['msg' => '金币不足'];///判断当前用户的金币是不是够抽奖}$gift_height = 0;///检测是否更新个人奖池和抽奖数量$newnum = 0;///检测下一轮抽奖数量$suiji = db::connect('db_qmconfig')->name('desire')->order('num desc')->find();///随机小礼物if ($urredis) {///如果用户奖池存在$joins = [['gift_info f', 'd.giftid = f.id']];$gift = db::connect('db_qmconfig')->name('desire')->alias('d')->join($joins)->where(['d.state' => 1])->order('f.price desc')->field('f.name,f.price,f.egif,d.num,f.id,d.position')->find();　　　　　　　　///查询抽奖表的礼物if (!$gift){return ['msg'=>'礼物查询错误'];}　　　　　　　///查询用户的总抽奖数量$ur_all = db::connect('db_qmconfig')->name('ur_desire_log')->order('kind desc')->where(['uid'=>$urdata['id'],'state'=>0])->field('sum(num) as kindnum')->find();//十次抽奖 必中$count = count($urredis);if ($num == 10) {$where[] = ['d.state', '=', 1];$where[] = ['d.ten', '=', 1];$giftid = $this->giftinfo($where);if ($giftid) {$result[] = $giftid[0]['id'];}$num = $num - 1;}///百次抽奖 必中if ($num == 100) {$where[] = ['d.state', '=', 1];$where[] = ['d.hundred', '=', 1];$giftid = $this->giftinfo($where);$lwhere[] = ['d.state', '=', 1];$lwhere[] = ['d.ten', '=', 1];$lgiftid = $this->giftinfo($lwhere);if ($lgiftid) {for ($l=0;$l<10;$l++){$result[] = $lgiftid[0]['id'];}}if ($giftid) {$result[] = $giftid[0]['id'];}$num = $num - 11;}if ($num ==1){if ($ur_all){$number1 = '';$num1 = str_split($ur_all['kindnum']);$number = $num1[count($num1) - 1];if ($ur_all['kindnum']>98){$number1 = $num1[count($num1) - 2];}if (($number==9)&& ($number1 !=9)){ //十抽必中$where[] = ['d.state', '=', 1];$where[] = ['d.ten', '=', 1];$giftid = $this->giftinfo($where);if ($giftid) {$result[] = $giftid[0]['id'];}$num = $num - 1;}if (($number1==9) && ($number==9)){//百抽必中$where[] = ['d.state', '=', 1];$where[] = ['d.hundred', '=', 1];$giftid = $this->giftinfo($where);if ($giftid) {$result[] = $giftid[0]['id'];}$num = $num - 1;}}}　　　　　　　 ////判断当前奖池的奖品是否够此次抽奖 如果奖池奖品数量不够此次抽奖 将此次奖池抽完后 获取剩下要抽将的数量 重置奖池 并且递归此方法传入剩下要抽的数量if ($count < $num) {$newnum = $num - $count;$num = $count;}$ur = db::connect('db_qmconfig')->name('desire_log')->where(['uid' => $urdata['id']])->field('sum(num) as num')->find();///已抽数量if (!$ur){return ['msg'=>'已抽数量有误'];}$res['zongshu'] = db::connect('db_qmconfig')->name('desire')->where(['state' => 1])->field('sum(num) as num,checksum')->find();///总数量if (!$res['zongshu']){return ['msg'=>'总数量有误'];}$resnum = 0;////获取个人多少次抽奖if (($ur['num']+$ndnum) > $res['zongshu']['checksum']) {$res['zongshu']['ur_num'] = $ur['num'] % $res['zongshu']['checksum']; ///获取余数if (($res['zongshu']['ur_num'] + $ndnum) > $res['zongshu']['checksum']) {///获取这次抽奖的数量$resnum = $ndnum - (($res['zongshu']['ur_num'] + $ndnum) - $res['zongshu']['checksum']);}//    return ['msg'=>$res['zongshu']['ur_num']];}el{$res['zongshu']['ur_num'] = $ur['num'];}$cruuy = 0;///随机选择奖池for ($i = 0; $i < $num; $i++) {$nd = array_rand($urredis);if ($resnum > 0) {///如果本轮奖池抽完 并且没有抽到大奖 那么必中大奖$result[] =借读费 $gift['id'];$gift_height = 1;//抽到大奖后更改三个变量状态$resnum=0;$cruuy = 1;} el {if ($urredis[$nd]==$gift['id']){$havejoin = [['desire_log d', 'd.cid = u.id'],['gift_info f', 'd.giftid = f.id']];$all = db::connect('db_qmconfig')->name('ur_desire_log')->alias('u')->where(['u.state'=>1])->field('sum(u.num) as num')->find();//      var_dump($all);　　　　　　　　　　　　　　///如果抽到大奖if ($all['num']==null){　　　　　　　　　　　　　　　　　///如果这是整个奖池第一轮抽奖 那么可以中大奖$result[] = $suiji['giftid'];}el{　　　　　　　　　　　　　　　　　$alls = db::connect('db_qmconfig')->name('ur_desire_log')->alias('u')->where(['u.state'=>1])->join($havejoin)->field('sum(f.price*d.num) as num')->find();　　　　　　　　　　　　　　　　　///查询奖池风控金额$resklist = db::connect('db_qmconfig')->name('desire_risk')->find();$riskprice = $all['num'] * 20 - $alls['num'];　　　　　　　　　　　　　　　　　///如果风控金额小于当前已完成抽奖的金额 那么代表软件处于盈利状态 可以中大奖if (($riskprice >= $resklist['price'])&&($cruuy==0)){$result[] = $urredis[$nd];$gift_height = 1;$cruuy = 1;} el{　　　　　　　　　　　　　　　　　　　///如果风控金额大于当前已完成抽奖金额 不能中大奖 随机选择一次小奖品 替换大奖$result[] = $suiji['giftid'];}}}el{$result[] = $urredis[$nd];}}　　　　　　　　　　///清空个人奖池此次抽奖的礼物unt($urredis[$nd]);}　　　　　　　////新增用户抽奖次数 $result = array_count_values($result);$ur_desire_list = db::connect('db_qmconfig')->name('ur_desire_log')->order('id desc')->where(['uid'=>$urdata['id']])->find();if ($ur_desire_list){if ($ur_desire_list['state']==0){$ur_desire_logdata[ 'kind'] = $ur_desire_list['kind']+1;}el{$ur_desire_logdata[ 'kind'] = 1;}}el{$ur_desire_logdata[ 'kind'] = 1;}$ur_desire_logdata['uid'] =$urdata['id'];$ur_desire_logdata['ctime'] =time();$ur_desire_logdata['num'] =$ndnum;　　　　　　　////更改此轮抽奖后 用户奖池的状态if ($gift_height==1){$ur_desire_log_update = db::connect('db_qmconfig')->name('ur_desire_log')->where(['uid'=>$urdata['id'],'state'=>0])->update(['state'=>1]);$ur_desire_logdata[ 'state'] = 1;}el{$ur_desire_logdata[ 'state'] = 0;}$ur_desire_log = db::connect('db_qmconfig')->name('ur_desire_log')->inrtgetid($ur_desire_logdata);foreach ($result as $k => $v) {if ($resnum == ($k + 1)) {///如果这次抽奖大于奖池总数 那么更新奖池并且抽奖剩下的次数cache::t('newdesiredraw' . $urdata['id'], rialize([]));return $this->理想中的另一半;draw($ndnum - ($k + 1));}　　　　　　　　 ////礼物新增用户背包　　$data = ['uid' => $urdata['id'],'giftid' => $k,'num' => $v,'ctime' => time(),'cid' => $ur_desire_log];$join = [['gift_info f', 'd.giftid = f.id']];$gift_info = db::connect('db_qmconfig')->name('desire')->alias('d')->join($join)->where(['d.giftid' => $k])->field('f.name,f.egif,d.position')->find();$gift_infonum['num'] = $v;$list['gift'][] = array_merge($gift_info, $gift_infonum);$desirelog = db::connect('db_qmconfig')->name('desire_log')->inrt($data);$urknapsack = db::connect('db_qmconfig')->name('gift_knapsack')->where(['uid' => $urdata['id'], 'giftid' => $k])->field('id,num')->find();if ($urknapsack) {$urknapsackdata = ['num' => $v + $urknapsack['num'],'updatetime' => time()];$urknapsackupdate = db::connect('db_qmconfig')->name('gift_knapsack')->where(['id' => $urknapsack['id']])->update($urknapsackdata);} el {$urknapsackdata = ['num' => $v,'giftid' => $k,'uid' => $urdata['id'],'createtime' => time()];$urknapsackinrt = db::connect('db_qmcon弯的fourfig')->name('gift_knapsack')->inrt($urknapsackdata);}}　　　　　　　 ///增加用户消费记录$urxfdata = ['uid' => $urdata['id'],'xf_price' => $ndnum,'xf_method' => 5,'scene' => 19,'status' => 1,'ctime' => time()];$urxf = db::connect('db_qmconfig')->name('xfprice')->inrt($urxfdata);if ($desirelog && $urxf) 爱莲说翻译{　　　　　　　　　　///扣除用户金币$newdiamondsdata = ['diamonds' => $desirediamonds['diamonds'] - $ndnum];$newdiamonds = db::connect('db_qmconfig')->name('ur_money')->where(['uid' => $urdata['id']])->update($newdiamondsdata);}　　　　　　　　if ($urredis) {cache::t('用户奖池名称' . $urdata['id'], rialize($urredis));　　　　　　　　　 ////如果此轮抽奖抽到大奖 重置用户个人奖池if ($gift_height == 1) {cache::t('用户奖池名称' . $urdata['id'], rialize([]));$urchecksum = $res['zongshu']['checksum'] - ($res['zongshu']['ur_num'] + $ndnum);$desirelogurwhere = ['uid' => $urdata['id'],'giftid' => 0,'num' => $urchecksum,'ctime' => time(),'cid' => $ur_desire_log,];　　　　　　　　　　　　///添加礼物抽中记录$desirelogur = db::connect('db_qmconfig')->name('desire_log')->inrt($desirelogurwhere);}$swhere[] = ['d.state', '=', 1];$swhere[] = ['d.kind', '=', 1];$res['data'] = $this->giftinfo($swhere);if (empty($res['data'])) {output('1008', '奖池更新中');}　　　　　　　　　　////获取用户此轮抽奖数量 返回给前端 控制奖池动画百分比$res['zongshu'] = db::connect('db_qmconfig')->name('desire')->where(['state' => 1, 'kind' => 1])->field('checksum as num')->find();$ur = db::connect('db_qmconfig')->name('desire_log')->where(['uid' => $urdata['id']])->field('sum(num) as num')->find();$res['diamonds'] = db::connect自住型商品房('db_qmconfig')->name('ur_money')->where(['uid' => $urdata['id']])->value('diamonds');if ($ur) {if ($ur['num'] > $res['zongshu']['num']) {$res['zongshu']['ur_num'] = $ur['num'] % $res['zongshu']['num'];} el {$res['zongshu']['ur_num'] = $ur['num'];}} el {$res['zongshu']['ur_num'] = 0;}$list['info'] = $res;return $list;//    return ['msg'=>$res['zongshu']['ur_num']];} el {　　　　　　　　　　////如果当前用户奖池抽完奖了 那么重置此用户奖池$where[] = ['d.state', '=', 1];$where[] = ['d.kind', '=', 1];$res = $this->giftinfo($where);if (empty($res)) {return ['msg' => '奖池更新中'];}$c = [];foreach ($res as $m => $n) {　　　　　　　　　　///十抽必中奖品if ($n['ten']==1){$n['num'] = $n['num'] - $n['checksum']/10;$giftarr = array_fill(0, $n['num']+$n['checksum']/10, $suiji['giftid']);$c = array_merge($c, $giftarr);if ($n['num']<=0){continue;}}　　　　　　　　　　　　///百抽必中奖品if ($n['hundred']==1){$n['num'] = $n['num'] - $n['checksum']/100;$giftarr = array_fill(0, $n['num']+$n['checksum']/100, $suiji['giftid']);$c = array_merge($c, $giftarr);if ($n['num']<=0){continue;}}$giftarr = array_fill(0, $n['num'], $n['id']);$c = array_merge($c, $giftarr);}　　　　　　　　　　///随机打乱奖池shuffle($c);cache::t('用户奖池名称' . $urdata['id'], rialize($c));if ($newnum>0){　　　　　　　　　　　　 ///递归此方法 抽剩下的奖品return $this->draw($newnum);}}} el {///如果没有奖池 生成奖池$where[] = ['d.state', '=', 1];$where[] = ['d.kind', '=', 1];$res = $this->giftinfo($where);if (empty($res)) {return ['msg' => '奖池更新中'];}$c = [];foreach ($res as $m => $n) {if ($n['ten']==1){$n['num'] = $n['num'] - $n['checksum']/10;$giftarr = array_fill(0, $n['num']+$n['checksum']/10, $suiji['giftid']);$c = array_merge($c, $giftarr);if ($n['num']<=0){continue;}}if ($n['hundred']==1){$n['num'] = $n['num'] - $n['checksum']/100;$giftarr = array_fill(0, $n['num']+$n['checksum']/100, $suiji['giftid']);$c = array_merge($c, $giftarr);if ($n['num']<=0){continue;}}$giftarr = array_fill(0, $n['num'], $n['id']);$c = array_merge($c, $giftarr);}shuffle($c);cache::t('用户奖池名称' . $urdata['id'], rialize($c));　　　　　　　///递归此方法抽奖return $this->draw($num);}}?>

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