在文件 Controller\AppController.php 中找不到类

Question

您好，我尝试连接mongo DB(Version 3.4.18)使用CakePHP (version 3.5.1) with Apache server on PHP (7.2.4)，并提示以下错误：面对 2019-07-01 10:41:09 Error: [Error] Class 'MongoClient' not found in E:\xampp\htdocs\myproject\src\Controller\AppController.php on line 142Request URL: /Stack Trace:#0 E:\xampp\htdocs\myproject\src\Controller\PagesController.php(219): App\Controller\AppController->__connectmongodb()#1 E:\xampp\htdocs\myproject\vendor\cakephp\cakephp\src\Controller\Controller.php(441): App\Controller\PagesController->home()#2 E:\xampp\htdocs\myproject\vendor\cakephp\cakephp\src\Http\ActionDispatcher.php(119): Cake\Controller\Controller->invokeAction()#3 E:\xampp\htdocs\myproject\vendor\cakephp\cakephp\src\Http\ActionDispatcher.php(93): Cake\Http\ActionDispatcher->_invoke(Object(App\Controller\PagesController))#4 E:\xampp\htdocs\myproject\vendor\cakephp\cakephp\src\Http\BaseApplication.php(103): Cake\Http\ActionDispatcher->dispatch(Object(Cake\Http\ServerRequest), Object(Cake\Http\Response))#5 E:\xampp\htdocs\myproject\vendor\cakephp\cakephp\src\Http\Runner.php(65): Cake\Http\BaseApplication->__invoke(Object(Cake\Http\ServerRequest), Object(Cake\Http\Response), Object(Cake\Http\Runner))#6 E:\xampp\htdocs\myproject\vendor\cakephp\cakephp\src\Routing\Middleware\RoutingMiddleware.php(107): Cake\Http\Runner->__invoke(Object(Cake\Http\ServerRequest), Object(Cake\Http\Response))对于 mongo db 连接尝试下面的代码public function __connectmongodb(){    $m = new \MongoClient('mongodb://localhost:27017');    return $db = $m->myDb;}注意：在mongo DB(Version 3.4.18)使用CakePHP (version 3.5.1) with Apache server on PHP (7.2.4)这些特定版本时我必须这样做更新- 我们尝试使用php_mongodb-1.4.0-7.2-ts-vc15-x64这个 .dll 文件在 Windows 上