while syntax
   Just like with if..endif, the syntax of while..endwhile has changed
   as well:
   
Example C-7. Migration: old while..endwhile syntax while ($more_to_come);
    ...
endwhile; |  
  | 
   Example C-8. Migration: new while..endwhile syntax while ($more_to_come):
    ...
endwhile; |  
  | 
  | Warning | 
    If you use the old while..endwhile syntax in PHP 3.0,
    you will get a never-ending loop.
     |