PHP Laravel create and instantiate class

Question

In PHP Laravel I want to create class with properties, class like DTO. In App\Entity I created class:

<?php

namespace App\Entity\DTO;

class UserDTO
{
    public $id;
}

And I want to use it in my Controller

<?php

namespace App\Http\Controllers;

use App\Entity\DTO;

class UserApiController extends Controller
{
    public function loginPost(Request $request)
    {
      ...
      $userDTO = new UserDTO();
      $userDTO->id = $user->id;
    }
}

And I have error:

Error: Class 'App\Http\Controllers\UserDTO' not found in file C:\xampp\htdocs\testsapp\app\Http\Controllers\UserApiController.php on line 131
#0 [internal function]: App\Http\Controllers\UserApiController->loginPost(Object(Illuminate\Http\Request))
#1 C:\xampp\htdocs\testsapp\vendor\laravel\framework\src\Illuminate\Routing\Controller.php(54): call_user_func_array(Array, Array)

It's looking for UserDTO in App\Http\Controllers nampespace. Don't see use App\Entity\DTO;

Try to replace use App\Entity\DTO; to use App\Entity\DTO\UserDTO; — Jitesh Dhamaniya
– Jitesh Dhamaniya, Commented Aug 16, 2020 at 2:40

lagbox · Accepted Answer · 2020-08-16 00:35:17Z

2

There is no actual "importing" that happens in PHP, everything is just an alias. You are aliasing App\Entity\DTO to DTO in this file, so to reference your DTO you would need to use DTO\UserDTO:

new DTO\UserDTO;

You are not importing everything inside DTO when you use the statement use App\Entity\DTO;; this is the equivalent of use App\Entity\DTO as DTO;

You can also just alias this class directly:

use App\Entity\DTO\UserDTO;

...

... new UserDTO;

edited Aug 16, 2020 at 0:35

answered Aug 16, 2020 at 0:28

lagbox

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