php优惠券的实现方式是什么

php优惠券的实现方式：1、创建一个前端文件，并判断优惠券是否存在或者停用；2、创建一个PHP示例文件；3、通过“public function doCoupon($params){...}”等方法处理优惠券领取情况即可。

本文操作环境：windows7系统、PHP7.4版、DELL G3电脑

php优惠券的实现方式是什么？

用PHP做了一个领取优惠券活动的示例代码

业务需求

优惠券活动，具体还是要根据自己的需求。以下是最近实现的优惠券活动，主要的业务需求：根据后端设置优惠券模板，用户类型设置，优惠券活动的开始与结束时间，最后生成不同的优惠券活动链接。

代码环境：

源码主要laravel5.8，一整个活动要贴的代码很多，下面主要贴核心代码，仅供参考。主要还是要根据自己的业务需求来实现功能吧。

以下是后端截图，做成模块化

前端需要做的设置与限制：

1 判断优惠券是否存在或者停用
2 判断活动开始时间与优惠券开始时间

接着领取活动优惠券，需要判断以下情况：
1 活动已结束
2 活动为开始时
3 活动为新用户领取，而领取的用户是老用户
4 活动为老用户领取，而领取的用户是新用户
5 优惠券是否领取完
6 已领取过优惠券提示
7 领取成功

下面核心代码实现

/**
 * Function:优惠券领取处理
 * Author:cyw0413
 * @param $params
 * @return array
 * @throws \Exception
 */
public function doCoupon($params)
{
  $activity_id = $params['activity_id'];
  if(!$params){
    throw new \Exception("参数错误！");
  }

  $preg_phone = '/^1[34578]\d{9}$/ims';
  $is_mobile = preg_match ($preg_phone, $params['mobile']);
  if ($is_mobile == 0) {
    throw new \Exception("手机号码不正确！");
  }

  //隐藏手机号码中间4位
  $str_mobile = substr_replace($params['mobile'],'****',3,4);

  $activity = $this->find($activity_id);
  if(empty($activity)){
    throw new \Exception("不存在此活动");
  }

  $activity_link = $activity->activityLink->where('coupon_status',0); //只选择不停用的优惠券
  if(count($activity_link) <= 0){
    throw new \Exception("优惠券不存在或者已经停用");

  }else{

    //查找注册用户ID
    $showUser = $this->showUser($params[&#39;mobile&#39;]);
    //主要是过滤掉领取优惠券为0的，用laravel的同学注意看看
    $detail = $activity_link->each(function($item,$index) use ($showUser) {

      $diffCouponQuantity = $this->diffCouponQuantity($item[&#39;config_id&#39;],$item[&#39;quantity&#39;],$item[&#39;activity_id&#39;],$showUser);
      $item->title = $this->getCouponName($item[&#39;config_id&#39;])[&#39;name&#39;];
      $item->number = $item[&#39;quantity&#39;];
      $item->msg  = $diffCouponQuantity [&#39;msg&#39;];
      $item->diff   = $diffCouponQuantity [&#39;diff&#39;];
      $item->code   = $diffCouponQuantity [&#39;code&#39;];
    })->toArray();

    if(count($detail) == 1){
      foreach($detail as $val){
        if($val[&#39;diff&#39;] == 1 && $val[&#39;code&#39;] == &#39;400&#39;){
          throw new \Exception($detail[0][&#39;msg&#39;]);
        }
      }

    }

    $collection_coupon = collect($detail);
    $collection_coupon = $collection_coupon->where(&#39;diff&#39;, &#39;<=&#39; ,&#39;0&#39;);  //去除优惠券剩余数量为0，或者领取优惠券数量-剩余数量 > 0

  }
  //判断活动开始时间与优惠券开始时间
  $act_coupon = ActivityCouponBaseModel::where(&#39;activity_id&#39;,$activity[&#39;activity_id&#39;])->first();
  $check_time = $this-> checkCouponTime($act_coupon[&#39;start_time&#39;],$activity_link);
  if($check_time == &#39;error&#39;){
    throw new \Exception("优惠券领取时间未开始,暂不可领取");
  }

  //领取活动有以下几种情况
  //1: 活动已结束
  if($activity[&#39;end_time&#39;] < date("Y-m-d H:i:s") || $activity[&#39;status&#39;] == 1){
    $result = [
      &#39;code&#39; => 1,
    ];
    return $result;
  }

  //6 活动为开始时
  if($activity[&#39;start_time&#39;] > date("Y-m-d H:i:s") || $activity[&#39;status&#39;] == 1){
    $result = [
      &#39;code&#39; => 6,
    ];
    return $result;

  }

  $checkUser = $this->haveUser($params[&#39;mobile&#39;]); //检查是新用户，还是老用户 根据自己的业务需求做，这个方法就不贴了
  //2: 活动为新用户领取，而领取的用户是老用户
  if($activity[&#39;user_type&#39;] == 1 && !empty($checkUser)){
    $result = [
      &#39;code&#39; => 2,
    ];
    return $result;
  }

  //3：活动为老用户领取，而领取的用户是新用户
  if($activity[&#39;user_type&#39;]==2 && empty($checkUser)){
    $result = [
      &#39;code&#39; => 3,
    ];
    return $result;
  }


  //4：优惠券是否领取完
  $coupon = $this->getCouponExpire($collection_coupon,$params[&#39;mobile&#39;]); //这里提示有一个优惠券列表，根据自己的业务需求做，这个方法就不贴了
  //return $coupon;
  if($coupon == 1){
    $result = [
      &#39;code&#39; => 4,
    ];
    return $result;
  }

  //5：已领取过优惠券提示
  $userCoupon = &#39;&#39;;
  $userRate = &#39;&#39;;
  if(!empty($checkUser)){
    //user存在则为老用户，再检查是否领取过
    $userCoupon = $this->getUserCoupon($collection_coupon,$checkUser[&#39;user_id&#39;]);
    $userRate = $this->getUserCouponRate($checkUser[&#39;user_id&#39;],$activity[&#39;activity_id&#39;]);
  }else{
    //新用户，检查是否注册过
    $var_user = UserBaseModel::where(&#39;user_name&#39;,$params[&#39;mobile&#39;])->first();
    if(!empty($var_user)){
      $userCoupon = $this->getUserCoupon($collection_coupon,$var_user[&#39;user_id&#39;]);
      $userRate = $this->getUserCouponRate($var_user[&#39;user_id&#39;],$activity[&#39;activity_id&#39;]);
    }
  }

  //return $userRate;

  if($userCoupon == 1){
    $result = [
      &#39;code&#39; => 5,
      &#39;phone&#39;=> $str_mobile,
      &#39;coupon&#39; => $userRate,
      &#39;is_get&#39; => false,
    ];
    return $result;
  }

  //5：领取成功
  //如果活动规定是新老用户0，新用户1，老用户2
  $getCouponSuccess = $this->getCouponSuccess($activity[&#39;user_type&#39;],$checkUser,$collection_coupon,$params[&#39;mobile&#39;]);
  //return $getCouponSuccess;
  if($getCouponSuccess[&#39;status&#39;] == 200){
    $result = [
      &#39;code&#39; => 5,
      &#39;phone&#39;=> $str_mobile,
      &#39;coupon&#39; => $getCouponSuccess[&#39;result&#39;][0],
      &#39;is_get&#39; => true,
    ];
    return $result;
  }


}

用户领取优惠券并发放优惠券

/**
 * Function:用户领取活动
 * Author:cyw0413
 * @param $user_type
 */
public function getCouponSuccess($user_type,$user,$coupon,$mobile)
{
  if(count($coupon) > 0){

    switch ($user_type){
      case 1:
        //新用户领取，如果从来没注册过就要新增用户
        $res = $this->addUser($mobile,$coupon); 
        return [
          'result' => $res,
          'status' => 200
        ];
        break;
      case 2:
        //老用户领取
        $res = $this->insertUserCoupon($user,$coupon);
        return [
          'result' => $res,
          'status' => 200
        ];
        break;
      default:
        //新老用户领取,判断是新用户还是老用户,这里的$user是有无配送单，有则为老用户；
        if(empty($user)){
          $res = $this->addUser($mobile,$coupon);
        }else{

          $res = $this->insertUserCoupon($user,$coupon); //老用户，直接发放优惠券
        }
        return [
          'result' => $res,
          'status' => 200
        ];
        break;
    }
  }else{
    throw new \Exception("优惠券不存在或者已经停用");
  }


}

领取成功，则发放优惠券

/**
 * Function:发放优惠券
 * Author:cyw0413
 * @param $user
 * @param $coupon
 */
public function insertUserCoupon($user,$coupon)
{
  $relate = [];
  foreach($coupon as $item){

    $res = CouponConfigSendBaseModel::where([
      'config_id'=>$item['config_id'],
      'status'  => 0,
    ])->first();

    if(empty($res) || (!empty($res) && $res['is_send'] == 0) ){
      throw new \Exception("优惠券未发放,暂不可领取");
    }

    //发放优惠券，有多少张就添加多少张，这里扣除优惠券时，主要用不同的coupon_sn来区别
    $onlyCoupon = $this->getCouponName($item['config_id']);
    if ($onlyCoupon['expire_type'] == 0) {
      $start_time = $onlyCoupon['expire_start_time'];
      $end_time = $onlyCoupon['expire_end_time'];
    } else {
      $start_time = date('Y-m-d H:i:s');
      $end_time = date('Y-m-d H:i:s', time()+86400*$onlyCoupon['expire_type']);
    }

    $result = [
      'user_id'  => $user['user_id'],
      'config_id' => $item['config_id'],
      'name'   => $onlyCoupon['name'],
      'get_type' => $onlyCoupon['get_type'],
      'amount'  => $onlyCoupon['amount'],
      'require_price' => $onlyCoupon['require_price'],
      'status'    => 1,
      'start_time'  => $start_time,
      'end_time'   => $end_time,
    ];
    for($i=0; $i < $item[&#39;quantity&#39;];$i++){
      $result[&#39;coupon_sn&#39;] = &#39;B&#39;.mt_rand(1, 10000) . strtoupper(uniqid(mt_rand(1, 10000)));
      $userCoupon = UserCouponBaseModel::create($result);
    }

    //扣除相应的优惠券数量,这里用到了锁表，防止并发时，优惠券为-1
    $couponConfig = CouponConfigBaseModel::where(&#39;config_id&#39;,$item[&#39;config_id&#39;])->lockForUpdate()->first();
    if($couponConfig->left_quantity > 0 ){
      if($couponConfig->left_quantity >= $item[&#39;quantity&#39;]){
        $couponConfig->left_quantity = $couponConfig->left_quantity-$item[&#39;quantity&#39;];
        $couponConfig->save();
      }else{
        throw new \Exception("优惠券剩余数量不够扣减");
      }

    }


    $relate = [
      &#39;coupon_id&#39; => $userCoupon->coupon_id,
      &#39;user_id&#39;  => $user[&#39;user_id&#39;],
      &#39;config_id&#39; => $item[&#39;config_id&#39;],
      &#39;activity_id&#39; => $item[&#39;activity_id&#39;]
    ];

    ActivityCouponUserRelateBaseModel::create($relate);

    $relate[] = $this->getUserCouponRate($user[&#39;user_id&#39;],$item[&#39;activity_id&#39;]);


  }

  return $relate;
}

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