That message means that the pdo_mysql library is missing from your PHP installation.

Check for this line in php.ini:
Code:
;extension=php_pdo_mysql.dll
Make sure it's uncommented (remove the leading semicolon).


Also, I'm not sure you have the right versions of all the software. I wrote these two tutorials a couple of years ago and they're a bit out of date now.

I would recommend the following for you:

Apache httpd VC11 x86
http://www.apachelounge.com/download...win32-VC11.zip

PHP 5.5 VC11 x86 thread-safe
http://windows.php.net/downloads/rel...2-VC11-x86.zip

Install those following the same procedure and see how you go.


Also also... the my.cnf file is only read by the command-line MySQL client — you will still need to supply credentials when connecting from PHP.