title: phpDoc way to list which outside constants a class uses?
body: <p>Is there a best practice way of documenting which outside constants are used by a PHP class?  </p>
  
  <p>For example, I have a class that logs data to a text file.  This class creates a file and puts it into a directory.  The path to this directory is the constant APP_LOG_PATH.  How should I document my code, so that someone can quickly look at the PHP class and know APP_LOG_PATH needs to be defined somewhere in the calling code.  Something like:</p>
  
  <pre><code>/**
  * Write to file
  *
  * @depends_on APP_LOG_PATH
  * @param string The file name
  * @param string The content to write
  */
  static public function write_to_file($filename, $content){
      file_put_contents(APP_LOG_PATH . $filename, $content);
  }
  </code></pre>