title: Define global function from within PHP namespace
body: <p>Is it <strong>possible</strong> to define a global function from within a PHP namespace (within a file that has a <a href="http://php.net/manual/en/language.namespaces.definition.php">namespace</a> declaration)? If so, how?</p>
  
  <pre><code>&lt;?php
  namespace my_module;
  
  # bunch of namespaced functions
  # ...
  # then I want to define a global function my_module()
  # that is an alias to my_module\mymodule()
  </code></pre>