title: How to call PHP a class from parent namespace?
body: <p>I have the following namespace structure with the following class files</p>
  
  <pre><code>Application
  |-&gt;App.php
  |-&gt;Top
     |-&gt;Start.php
     |-&gt;Process.php
     |-&gt;Child
        |-&gt;Plugin.php
  </code></pre>
  
  <p>So in App.php I've declared</p>
  
  <pre><code>namespace Application;
  </code></pre>
  
  <p>in Startp.php declared</p>
  
  <pre><code>namespace Application\Top;
  </code></pre>
  
  <p>in Plugin.php declared</p>
  
  <pre><code>namespace Application\Top\Child;
  </code></pre>
  
  <p>I see that I can call the Plugin.php class from the App.php like</p>
  
  <pre><code>$object = new Top\Child\Plugin();
  </code></pre>
  
  <p>if it's a child/grandchild namespace, but what if I want to call Process.php from Plugin.php, which is the parent namespace from the branch? Is there something like double dots ".." to indicate the upper parent directory in namespace? I am trying to call something like</p>
  
  <pre><code>File: Plugin.php
  
  $object = new ..\Process();
  </code></pre>
  
  <p>it didn't work, it looks like I can only start all the way from the root like</p>
  
  <pre><code>$object = new \Application\Top\Process()
  </code></pre>
  
  <p>Is this the only option? Thank you!</p>