PHPとVue：会員ポイント2倍の計算方法の実装方法

CREATE TABLE `members` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(255) NOT NULL,
  `points` int(11) NOT NULL DEFAULT '0',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

CREATE TABLE `multipliers` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(255) NOT NULL,
  `multiplier` decimal(10,2) NOT NULL DEFAULT '1.00',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

$conn = new PDO("mysql:host=localhost;dbname=your_db", "username", "password");

// 获取会员信息
$members = $conn->query("SELECT * FROM members")->fetchAll(PDO::FETCH_ASSOC);

// 获取倍增规则
$multipliers = $conn->query("SELECT * FROM multipliers")->fetchAll(PDO::FETCH_ASSOC);

foreach ($members as $member) {
    $points = $member['points'];
    
    foreach ($multipliers as $multiplier) {
        $points *= $multiplier['multiplier'];
    }
    
    // 更新会员积分
    $conn->query("UPDATE members SET points = $points WHERE id = {$member['id']}");
}

<template>
  <div>
    <div v-for="member in members" :key="member.id">
      <h4>{{ member.name }}</h4>
      <p>原始积分：{{ member.points }}</p>
      <p>最终积分：{{ calculatePoints(member) }}</p>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      members: []
    };
  },
  mounted() {
    this.getMembers();
  },
  methods: {
    getMembers() {
      // 使用Ajax请求后端数据
      axios.get('/api/members')
        .then(response => {
          this.members = response.data;
        })
        .catch(error => {
          console.log(error);
        });
    },
    calculatePoints(member) {
      let points = member.points;
      
      // 根据倍增规则计算积分
      member.multipliers.forEach(multiplier => {
        points *= multiplier.multiplier;
      });
      
      return points;
    }
  }
}
</script>