What is the implementation of php coupons

How to implement php coupons: 1. Create a front-end file and determine whether the coupon exists or is deactivated; 2. Create a PHP sample file; 3. Through "public function doCoupon($params){ ...}" and other methods to handle the coupon collection situation.

The operating environment of this article: windows7 system, PHP7.4 version, DELL G3 computer

What is the implementation method of php coupons ?

Use PHP to make a sample code for receiving coupon activities

Business requirements

Coupon activities, the specifics are According to your own needs. The following are the main business requirements of the recently implemented coupon activity: setting the coupon template according to the backend, setting the user type, starting and ending time of the coupon activity, and finally generating different coupon activity links.

Code environment：

The source code is mainly laravel5.8. There is a lot of code to be posted for a whole activity. The core code is mainly posted below. It is only for refer to. The main thing is to implement the functions according to your own business needs.

The following are screenshots of the backend, made into modules

The settings and restrictions that need to be made on the front-end:

1 Determine whether the coupon exists or is disabled
2 Determine the event start time and coupon start time

To then receive the event coupon, you need to determine the following situations:
1 The activity has ended
2 The activity is at the beginning
3 The activity is for new users to receive, and the users who receive it are old users
4 The activity is for old users to receive, and the users who receive it are new users
5 Whether the coupon has been collected
6 Already received the coupon prompt
7 Received successfully

The following core code implements

/**
 * 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;
  }


}

User receives the coupon And issue coupons

/**
 * 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");
  }


}

If the receipt is successful, coupons

/**
 * 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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