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:thinkphpredismysql
表:desire抽奖商品表desire_log用户抽奖奖品表user_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
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 publicfunctiondraw($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 $suiji=Db::connect('db_qmconfig')->name('desire')->order('numdesc')->find();///随机小礼物 if($userRedis){///如果用户奖池存在 $joins=[ ['gift_infof','d.giftid=f.id'] ]; $gift=Db::connect('db_qmconfig')->name('desire') ->alias('d') ->join($joins) ->where(['d.state'=>1]) ->order('f.pricedesc') ->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 $user_all=Db::connect('db_qmconfig')->name('user_desire_log')->order('kinddesc') ->where(['uid'=>$userData['id'],'state'=>0])->field('SUM(num)askindNum')->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)asnum') ->find();///已抽数量 if(!$user){ return['msg'=>'已抽数量有误']; } $res['zongshu']=Db::connect('db_qmconfig') ->name('desire')->where(['state'=>1]) ->field('SUM(num)asnum,checksum') ->find();///总数量 if(!$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_logd','d.cid=u.id'], ['gift_infof','d.giftid=f.id'] ]; $all=Db::connect('db_qmconfig') ->name('user_desire_log') ->alias('u') ->where(['u.state'=>1]) ->field('SUM(u.num)asnum')->find(); //var_dump($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)asnum')->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); $user_desire_list=Db::connect('db_qmconfig')->name('user_desire_log')->order('iddesc')->where(['uid'=>$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($resultas$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_infof','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('checksumasnum') ->find(); $user=Db::connect('db_qmconfig') ->name('desire_log')->where(['uid'=>$userData['id']]) ->field('SUM(num)asnum') ->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']; } $c=[]; foreach($resas$m=>$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']; } $c=[]; foreach($resas$m=>$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::set('用户奖池名称'.$userData['id'],serialize($c)); ///递归此方法抽奖 return$this->draw($num); } } ?>
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