title: Can I Register more than one shutdown function in PHP?
body: <p>using <code>register_shutdown_function</code> I can register code to execute at the end of a PHP script execution "no matter what".</p>
  
  <p>Can I have more than one function registered?</p>
  
  <p>This question arises since I may not know if someone has already registered one when I'm about to register my own.</p>
  
  <p>Thanks.</p>