如何利用PHP和UniApp实现数据的批量导入

<?php
  // 连接数据库
  $conn = new mysqli("localhost", "username", "password", "database_name");

  // 处理上传文件
  $file = $_FILES['file'];
  $temp = $file['tmp_name'];
  $filename = $file['name'];

  // 打开上传文件并读取数据
  $handle = fopen($temp, "r");
  $data = fgetcsv($handle);

  // 导入数据
  while (($data = fgetcsv($handle)) !== false) {
    $name = $data[0];
    $age = $data[1];
    $email = $data[2];

    // 将数据插入数据库
    mysqli_query($conn, "INSERT INTO `table_name` (`name`, `age`, `email`) VALUES ('$name', $age, '$email')");
  }

  // 关闭文件处理器
  fclose($handle);

  // 关闭数据库连接
  mysqli_close($conn);

  // 返回导入成功信息
  echo "数据导入成功";
?>

<template>
  <view>
    <input type="file" @change="handleUpload" />
    <button @click="importData">导入数据</button>
  </view>
</template>

<script>
  export default {
    methods: {
      handleUpload(event) {
        this.file = event.target.files[0];
      },
      importData() {
        let formData = new FormData();
        formData.append('file', this.file);

        // 调用后端API导入数据
        uni.request({
          url: 'http://localhost/import.php',
          method: 'POST',
          data: formData,
          success(res) {
            console.log('数据导入成功');
            uni.showToast({
              title: '数据导入成功',
              icon: 'success',
              duration: 2000
            });
          },
          fail(res) {
            console.log('数据导入失败');
            uni.showToast({
              title: '数据导入失败',
              icon: 'none',
              duration: 2000
            });
          }
        });
      }
    }
  }
</script>