title: Doxygen - how to document a variable so I can see its type
body: <p>I'm sorry if it sounds too simple a question but still ...</p>
  
  <p>I am documenting php code and whereas all functions etc. look good in the generated documentation, 
  I have problems with variable types which should be visible in the generated documentation.</p>
  
  <p>I document them in this way:</p>
  
  <pre><code>    /**
        * $request - request object 
        * 
        * @type int
        * @access private
        */
       private $request;
  </code></pre>
  
  <p>As a result, I can see 'int' in the generated documentation, but <code>@type</code> is not a correct command. The proper command would be <code>@var</code> instead of <code>@type</code> but then I cannot see the type of the variable in the documentation.
  So the question is "<em>How to document a variable so I can see its type?</em>"
  Please help :)</p>