Did you enable the MySQL module in your PHP installation? This is required.
Please see the PHP installation documentation that came with your copy of PHP.

dexpro wrote:

I installed the manually PHP. NOw in all the instructions I went through the
guide and did not get any thing specific on that. Can you tell me where can I
find notes on that?

Look under the heading 'Installation of extensions on Windows' in install.txt for directions.

The particular line you want to change in php.ini is:
extension=php_mysql.dll

If it has a semicolon (;) at the beginning, it's disabled: remove that line and restart the web server.

dexpro wrote:

I am still getting the following error:

Warning: dl() [function.dl]: Not supported in multithreaded Web servers - use
extension=mysql.so in your php.ini in C:\Program Files\Apache
Group\Apache2\htdocs\wiki\install-utils.inc on line 17
Could not load MySQL driver! Please compile php --with-mysql or install the
mysql.so module.

richholton wrote:

(In reply to comment #4)

Unless I'm mistaken, Brion made a typo in his instructions to you -- if you
followed them to the letter you would not have fixed the issue:

Find the line
extension=php_mysql.dll

It begins with a semicolon. Remove that semicolon (not the entire line).

If you have removed the entire line, replace it (minus the semicolon). In my
php.ini file, that line immediately follows the line
;extension=php_msql.dll
I'm not sure that order is significant, but just to be safe...

jeluf wrote:

Closed since this is not a MediaWiki bug, but a PHP installation issue.

aaron.schulz wrote:

content hidden as private in Bugzilla