check this post it was simple and effective. i too had the same problem, this gives the functionality behind the lines in the php.ini.
when you have two versions of php installed in wamp, which was the cause of error in my case, this will help...
[
www.howwhywhat.in]
happy coding..
Edited 1 time(s). Last edit at 11/20/2012 04:27AM by karthick-sk.