PHP实现抽奖功能实例代码

<?php 

　　　//抽奖接口

  public function desire()
  {
    $userData = $this->userSessionData();///用户的唯一标识
    $time = time();
    $this->limit_reward_time($userData['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');
        }else{
          $send = $this->draw($num);
        }
      }else{
        $send = $this->draw($num);
      }
    }else{
      $send = $this->draw($num);
    }
    if ($send != '金币不足') {
      output('200', '列表', $send);
    } else {
      output('1012', $send);
    }
  }



　　/////抽奖核心
　　
  public function draw($num)
  {
    $userData = $this->userSessionData();
    $resultSend = Cache::get('奖池名称加上用户的唯一标识，确保一人一奖池' . $userData['id']);//获取个人奖池
    if (!empty($resultSend)) {
      $userRedis = unserialize(Cache::get('newdesiredraw' . $userData['id']));///将奖池序列化
    } else {
      $userRedis = '';///当前用户不存在奖池
    }
　　　　 ///查询当前用户的金币
    $desireDiamonds = Db::connect('db_qmconfig')->name('user_money')->where(['uid' => $userData['id']])->field('diamonds')->find();
    $sendNum = $num;
    if ($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
    $suiji = Db::connect('db_qmconfig')->name('desire')->order('num desc')->find();///随机小礼物
    if ($userRedis) {///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
      $user_all = Db::connect('db_qmconfig')->name('user_desire_log')->order('kind desc')
        ->where(['uid'=>$userData['id'],'state'=>0])->field('SUM(num) as kindNum')->find();
      //十次抽奖 必中
      $count = count($userRedis);
      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 ($user_all){
          $number1 = '';
          $num1 = str_split($user_all['kindNum']);
          $number = $num1[count($num1) - 1];
          if ($user_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;
      }
      $user = Db::connect('db_qmconfig')
        ->name('desire_log')->where(['uid' => $userData['id']])
        ->field('SUM(num) as num')
        ->find();///已抽数量
      if (!$user){
        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'];
      }
      $resNum = 0;
      ////获取个人多少次抽奖
      if (($user['num']+$sendNum) > $res['zongshu']['checksum']) {
        $res['zongshu']['user_num'] = $user['num'] % $res['zongshu']['checksum']; ///获取余数
        if (($res['zongshu']['user_num'] + $sendNum) > $res['zongshu']['checksum']) {
          ///获取这次抽奖的数量
          $resNum = $sendNum - (($res['zongshu']['user_num'] + $sendNum) - $res['zongshu']['checksum']);
        }
//        return ['msg'=>$res['zongshu']['user_num']];
      }else{
        $res['zongshu']['user_num'] = $user['num'];
      }
      $cruuy = 0;
      ///随机选择奖池
      for ($i = 0; $i < $num; $i++) {
        $send = array_rand($userRedis);
        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[] = $gift['id'];
          $gift_height = 1;//抽到大奖后更改三个变量状态
          $resNum=0;
          $cruuy = 1;
        } else {
          if ($userRedis[$send]==$gift['id']){
            $haveJoin = [
              ['desire_log d', 'd.cid = u.id'],
              ['gift_info f', 'd.giftid = f.id']
            ];
            $all = Db::connect('db_qmconfig')
              ->name('user_desire_log')
              ->alias('u')
              ->where(['u.state'=>1])
              ->field('SUM(u.num) as num')->find();
//            var_dump($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'];
            }else{
　　　　　　　　　　　　　　　　　
              $alls = Db::connect('db_qmconfig')->name('user_desire_log')
                ->alias('u')
                ->where(['u.state'=>1])
                ->join($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[] = $userRedis[$send];
                $gift_height = 1;
                $cruuy = 1;
              } else{
　　　　　　　　　　　　　　　　　　　///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'];
              }
            }

          }else{
            $result[] = $userRedis[$send];
          }
        }
　　　　　　　　　　///清空个人奖池此次抽奖的礼物
        unset($userRedis[$send]);
      }
　　　　　　　////新增用户抽奖次数 
      $result = array_count_values($result);
      $user_desire_list = Db::connect('db_qmconfig')->name('user_desire_log')->order('id desc')->where(['uid'=>$userData['id']])->find();
      if ($user_desire_list){
        if ($user_desire_list['state']==0){
          $user_desire_logData[ 'kind'] = $user_desire_list['kind']+1;
        }else{
          $user_desire_logData[ 'kind'] = 1;
        }
      }else{
        $user_desire_logData[ 'kind'] = 1;

      }
      $user_desire_logData['uid'] =$userData['id'];
      $user_desire_logData['ctime'] =time();
      $user_desire_logData['num'] =$sendNum;
　　　　　　　////更改此轮抽奖后 用户奖池的状态
      if ($gift_height==1){
        $user_desire_log_update = Db::connect('db_qmconfig')->name('user_desire_log')
          ->where(['uid'=>$userData['id'],'state'=>0])->update(['state'=>1]);
        $user_desire_logData[ 'state'] = 1;
      }else{
        $user_desire_logData[ 'state'] = 0;
      }
      $user_desire_log = Db::connect('db_qmconfig')->name('user_desire_log')->insertGetId($user_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::set('newdesiredraw' . $userData['id'], serialize([]));
          return $this->draw($sendNum - ($k + 1));
        }

　　　　　　　　  ////礼物新增用户背包　　
        $data = [
          'uid' => $userData['id'],
          'giftid' => $k,
          'num' => $v,
          'ctime' => time(),
          'cid' => $user_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);
        $desireLog = Db::connect('db_qmconfig')->name('desire_log')->insert($data);
        $userKnapsack = Db::connect('db_qmconfig')->name('gift_knapsack')->where(['uid' => $userData['id'], 'giftid' => $k])->field('id,num')->find();
        if ($userKnapsack) {
          $userKnapsackData = [
            'num' => $v + $userKnapsack['num'],
            'updatetime' => time()
          ];
          $userKnapsackUpdate = Db::connect('db_qmconfig')->name('gift_knapsack')->where(['id' => $userKnapsack['id']])->update($userKnapsackData);
        } else {
          $userKnapsackData = [
            'num' => $v,
            'giftid' => $k,
            'uid' => $userData['id'],
            'createtime' => time()
          ];
          $userKnapsackInsert = Db::connect('db_qmconfig')->name('gift_knapsack')->insert($userKnapsackData);
        }
      }
　　　　　　　 ///增加用户消费记录
      $userXfData = [
        'uid' => $userData['id'],
        'xf_price' => $sendNum,
        'xf_method' => 5,
        'scene' => 19,
        'status' => 1,
        'ctime' => time()
      ];
      $userXf = Db::connect('db_qmconfig')->name('xfprice')->insert($userXfData);
      if ($desireLog && $userXf) {
　　　　　　　　　　///扣除用户金币
        $newDiamondsData = [
          'diamonds' => $desireDiamonds['diamonds'] - $sendNum
        ];
        $newDiamonds = Db::connect('db_qmconfig')->name('user_money')->where(['uid' => $userData['id']])->update($newDiamondsData);
      }
　　　　　　　　

      if ($userRedis) {
        Cache::set('用户奖池名称' . $userData['id'], serialize($userRedis));
　　　　　　　　　 ////如果此轮抽奖抽到大奖 重置用户个人奖池
        if ($gift_height == 1) {
          Cache::set('用户奖池名称' . $userData['id'], serialize([]));
          $userChecksum = $res['zongshu']['checksum'] - ($res['zongshu']['user_num'] + $sendNum);
          $desireLogUserWhere = [
            'uid' => $userData['id'],
            'giftid' => 0,
            'num' => $userChecksum,
            'ctime' => time(),
            'cid' => $user_desire_log,
          ];
　　　　　　　　　　　　///添加礼物抽中记录
          $desireLogUser = Db::connect('db_qmconfig')->name('desire_log')->insert($desireLogUserWhere);
        }
        $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();
        $user = Db::connect('db_qmconfig')
          ->name('desire_log')->where(['uid' => $userData['id']])
          ->field('SUM(num) as num')
          ->find();
        $res['diamonds'] = Db::connect('db_qmconfig')
          ->name('user_money')->where(['uid' => $userData['id']])
          ->value('diamonds');

        if ($user) {
          if ($user['num'] > $res['zongshu']['num']) {
            $res['zongshu']['user_num'] = $user['num'] % $res['zongshu']['num'];

          } else {
            $res['zongshu']['user_num'] = $user['num'];
          }
        } else {
          $res['zongshu']['user_num'] = 0;
        }
        $list['info'] = $res;
        return $list;
//        return ['msg'=>$res['zongshu']['user_num']];
      } else {
　　　　　　　　　　////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::set('用户奖池名称' . $userData['id'], serialize($c));
        if ($newNum>0){
　　　　　　　　　　　　 ///递归此方法 抽剩下的奖品
          return $this->draw($newNum);
        }
      }
    } else {
      ///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']);
          $c = a<em style="color:transparent">来源[email protected]搞@^&代*@码网</em>rray_merge($c, $giftarr);
          if ($n['num']<=0){
            continue;
          }
        }
        $giftarr = array_fill(0, $n['num'], $n['id']);
        $c = array_merge($c, $giftarr);
      }
      shuffle($c);
      Cache::set('用户奖池名称' . $userData['id'], serialize($c));
　　　　　　　///递归此方法抽奖
      return $this->draw($num);
    }
  }
?>