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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