title: very interesting use of return keyword in php
body: <p>as we know, <strong>return</strong> keyword will RETURN some value and exit current function. Mean, that this one used only inside some functions.</p>
  
  <p><b>BUT,</b> I saw some php-dev's use return keyword outside functions, even in index.php file (in root of web server). What is that mean???? By the way, maybe it's logical to require some file inside function, but this style isnt mine.</p>