In order to enable to MySQLi extension in your WHM, please follow these steps:
- Log into the WHM with your root credentials.
- Go to the EasyApache (Apache Update) menu, located in the Software section or use the search box to find it.
- On the EasyApache page, make sure your Previously Saved (Default) configuration is selected and click on Customize Profile.
- Keep clicking Next Step, until you reach the Short Options List page and scroll to the bottom of the page.
- Click on the Exhaustive Options List button.
- On this page, scroll down to the PHP section and find MySQL Improved extension.
- Ensure the check box is filled in and scroll to the bottom.
- Click the Save Only button.
- On the next page, click the Build profile I just saved button.
- A pop box will appear and ask you to recompile Apache and PHP, select Yes and I understand, if prompted.
- Wait until the Build ouput is complete and the MySQLi extension should be installed/enabled.

