使用Composer Pusher Library命名空间(Namespacing with Composer Pusher Library)

 我已经使用composer安装了https://packagist.org/packages/pusher/pusher-php-server，并且我的应用程序中的所有软件包都是PSR-4自动加载。 
 
 我能够使用从没有提到“使用命名空间”的页面调用的基本代码成功连接到Pusher API： 
 
$pusher = new Pusher(
            $app->config->get('pusher.api-key'), 
            $app->config->get('pusher.api-secret'),
            $app->config->get('pusher.app-id'),
            array('encrypted' => true)
        );
 
 我决定在其自己的类中使用所有Pusher连接代码，因此我在其自己的命名空间中创建了下面的类，并将其保存为Smawt / Helpers目录中的PusherConnect.php： 
 
<?php

namespace Smawt\Helpers;

class PusherConnect
{
    protected $app;

    public function __construct($app)
    {
        $this->app = $app;

        $pusher = new Pusher(
            $this->app->config->get('pusher.api-key'), 
            $this->app->config->get('pusher.api-secret'),
            $this->app->config->get('pusher.app-id'),
            array('encrypted' => true)
        );

        $results = $pusher->get_channels( array( 'filter_by_prefix' => 'user_') );
        $channel_count = count($results->channels);

        $this->app->view->appendData([
            'channels_count' => $channel_count
        ]);

        $pusher->channel_count = $channel_count;

        return $pusher;
    }

    public function check()
    {
        if (!$this->app->config->get('pusher.api-key')) {
            $this->app->flash('global', 'No Pusher account has been set up.');
            return $this->app->response->redirect($this->app->urlFor('home'));
        }
    }
}
 
 然后，我用实例化对象 
 
<?php

use Smawt\Helpers\PusherConnect;

$pusher = new PusherConnect($app);
 
 但我遇到了 
 
Fatal error: Class 'Smawt\Helpers\Pusher' not found in C:\Users\...\PusherConnect.php on line 13
 
 所以，我意识到pusher-php-server类没有命名空间，因为Composer生成的autoload_psr4.php文件中没有提到Pusher命名空间。 所以，我编辑了供应商提供的Pusher.php文件： 
 
namespace Pusher;

class PusherException extends \Exception
{
}

class Pusher
{ ...
 
 和我自己的PusherConnect课程 
 
public function __construct($app)
    {
        $this->app = $app;

        $pusher = new \Pusher\Pusher(
 
 一切都开始了。 
 
 问题似乎与在我自己的类中实例化非命名空间的Pusher类有关，该类是命名空间的。 所以，我的问题是“我如何阻止Composer覆盖我的更改，下次我编写更新时，以及为什么我无法通过引用我自己的全局命名空间来避免编辑Composer安装的包类？” 例如在我自己的PusherConnect类中 
 
public function __construct($app)
    {
        $this->app = $app;

        $pusher = new \Pusher(
 
 顺便说一下，Pusher Library似乎一度被命名，但不再是： https ： //github.com/pusher/pusher-http-php/commit/fea385ade9aede97b37267d5be2fce59d0f1b09d 
 
 提前致谢 

I have installed https://packagist.org/packages/pusher/pusher-php-server using composer and am PSR-4 autoloading all of the packages in my app.
 
I was able to successfully connect to Pusher API using basic code called from a page that had no "use namespace" mentioned: 
 
$pusher = new Pusher(
            $app->config->get('pusher.api-key'), 
            $app->config->get('pusher.api-secret'),
            $app->config->get('pusher.app-id'),
            array('encrypted' => true)
        );
 
I decided that I wanted all of the Pusher connection code within its own class, so I created the class below within its own namespace, and saved it as PusherConnect.php in the Smawt/Helpers directory:
 
<?php

namespace Smawt\Helpers;

class PusherConnect
{
    protected $app;

    public function __construct($app)
    {
        $this->app = $app;

        $pusher = new Pusher(
            $this->app->config->get('pusher.api-key'), 
            $this->app->config->get('pusher.api-secret'),
            $this->app->config->get('pusher.app-id'),
            array('encrypted' => true)
        );

        $results = $pusher->get_channels( array( 'filter_by_prefix' => 'user_') );
        $channel_count = count($results->channels);

        $this->app->view->appendData([
            'channels_count' => $channel_count
        ]);

        $pusher->channel_count = $channel_count;

        return $pusher;
    }

    public function check()
    {
        if (!$this->app->config->get('pusher.api-key')) {
            $this->app->flash('global', 'No Pusher account has been set up.');
            return $this->app->response->redirect($this->app->urlFor('home'));
        }
    }
}
 
I then instantiated the object with 
 
<?php

use Smawt\Helpers\PusherConnect;

$pusher = new PusherConnect($app);
 
but I was met with
 
Fatal error: Class 'Smawt\Helpers\Pusher' not found in C:\Users\...\PusherConnect.php on line 13
 
So, I realised that the pusher-php-server classes were not namespaced, as no Pusher namespaces were mentioned in the Composer generated autoload_psr4.php file. So, I edited the vendor supplied Pusher.php file:
 
namespace Pusher;

class PusherException extends \Exception
{
}

class Pusher
{ ...
 
and my own PusherConnect class
 
public function __construct($app)
    {
        $this->app = $app;

        $pusher = new \Pusher\Pusher(
 
and all started working.
 
The problem appears to be related to instantiating the non-namespaced Pusher class from within my own class, which is namespaced. So, my question is "How do I prevent Composer over-writing my changes, next time I composer update, and also, why am I not able to avoid this editing of the Composer installed package by referring to the global namespace from within my own class?" such as in my own PusherConnect class
 
public function __construct($app)
    {
        $this->app = $app;

        $pusher = new \Pusher(
 
Incidentally, it appears that the Pusher Library was namespaced at one time, but is no longer: https://github.com/pusher/pusher-http-php/commit/fea385ade9aede97b37267d5be2fce59d0f1b09d
 
Thanks in advance

原文：https://stackoverflow.com/questions/33368110