php - 命名空间声明语句必须是脚本中的第一个语句

Question

我刚开始使用 Laravel 开发 Web 应用程序，我在使用依赖注入(inject)时遇到了问题。没有 DI 也能正常工作，但我想重构代码以使代码不紧密耦合。

我已经在 google 中搜索，表明命名空间之前可能有一个空格并在此处搜索相关问题，但它们都没有解决我的问题。

账户 Controller

<?php

namespace TabJut\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Input;
use Illuminate\Support\Facades\Redirect;
use Illuminate\Support\Facades\Validator;

use View;

use TabJut\Http\Requests;
use TabJut\Http\Controllers\Controller;
use TabJut\Repositories\AccountRepository;

class AccountController extends Controller
{
    /* error culprit, If I remove these the page not error */
    protected $repository;

    public function __construct(AccountRepository $repository)
    {
        $this->repository = $repository;
    }
    /* error culprit */

    public function getLogin()
    {
        return View::make('account.login');
    }

    public function postLogin()
    {
        // Validates inputs.
        $rules = array(
            'username' => 'required', 
            'password' => 'required'
        );
        $validator = Validator::make(Input::all(), $rules);

        // Redirects back to the form if the validator fails.
        if ($validator->fails()) {
            return Redirect::action('AccountController@getLogin')
                ->withErrors($validator)
                ->withInput(Input::except('password'));
        } 

        $username = Input::get('username');
        $password = Input::get('password');
        $user = $repository.Authenticate($username, $password);
        var_dump($user);
    }
}

帐户存储库

<?php

namespace TabJut\Repositories;

use DB;

class AccountRepository
{
    public function Authenticate($username, $password)
    {
        $user = DB::table('users')
                    ->where('is_active', '1')
                    ->where('user_name', $username)
                    ->where('password', $password)
                    ->first();    
        return $user;
    }
}

文件夹树



错误信息

FatalErrorException in AccountRepository.php line 3: Namespace declaration statement has to be the very first statement in the script

in AccountRepository.php line 3
at FatalErrorException->__construct() in HandleExceptions.php line 127
at HandleExceptions->fatalExceptionFromError() in HandleExceptions.php line 112
at HandleExceptions->handleShutdown() in HandleExceptions.php line 0
at Composer\Autoload\includeFile() in ClassLoader.php line 301

我是否错过了任何重要的配置，例如服务定位器设置或只是看不见的代码错误？

请帮忙。

Answer 1

它与依赖注入(inject)无关，根据 kuzawinski 对手册的评论，我用记事本重新创建了文件，它解决了问题。

...and you still get "Namespace declaration statement has to be the very first statement in the script" Fatal error, then you probably use UTF-8 encoding (which is good) with Byte Order Mark, aka BOM (which is bad). Try to convert your files to "UTF-8 without BOM", and it should be ok. Comment