Hello, i'm a Software Eng. and doing a research on PHP and MYSQL , but i have 2 questions...

1- in a .php page i'm including common.php
  include("common.php")

and do some processing in that page..but what happens when i open the browser on that page is that the common.php is not processed,,,while on the contrary if i place the common.php code instead of the include it will work...so what is the problem...


2- i'm afraid that each call to a .php page will open a new process (.exe) and not a thread ...
so can you tell me am i right or wrong and how to make it dll work....(threads)

Best Regards
Mohannad Salam