Mysqli.class.php inclusion

[BlasterV]

I am trying to set up a website in php using Apache 2.2 on Windows. I'll note that I did not create the website I am trying to set up. I am running into this issue:

 

"Warning: include_once(mysqli.class.php) [function.include-once]: failed to open stream: No such file or directory in PATH" which of course leads to: "Fatal error: Class 'MySQLHandler' not found".

 

I've set up other php websites and have run into this problem before. Normally, I would adjust the include_path in php.ini to wherever the dependency is and the problem would be solved. However, this file "mysqli.class.php" does not seem to exist as a file in the same way other php files do, so I have no idea how to include it. That's where I'm stuck right now. I am not getting any other warnings or errors with the website.

 

Thanks for any help!