使用PHP微框架Slim创建的Vue.js 2 + API

Question

我正在学习如何创建API并将其与Vue.js应用程序连接。 我需要创建用户的注册表单。 如果我使用PHP创建API然后将其连接到我的Vue.js以便注册用户，这是否正确？ API将连接到MySQL db。

这是我的db.php类：

class DB {
    private $dbhost = 'localhost';
    private $dbuser = 'root';
    private $dbpass = '';
    private $dbname = 'organization';

    public function Connect() {
      $mysqli = new mysqli($this->dbhost, $this->dbuser, $this->dbpass, $this->dbname);

      if ($mysqli->connect_errno) {
          echo "Не удалось подключиться к MySQL: (".$mysqli->connect_errno.") ".$mysqli->connect_error;
      }
      return $mysqli;
    }
  }

这是路线之一：

<?php
use \Psr\Http\Message\ServerRequestInterface as Request;
use \Psr\Http\Message\ResponseInterface as Response;

$app = new \Slim\App;

$app->get('/api/customers', function(Request $request, Response $response) {
  $db = new DB();
  $db = $db->Connect();

  $sql = "SELECT * FROM workers";
  $result = $db->query($sql);

  echo json_encode($result->fetch_assoc());

  $db->close();
});