The TimezoneDB Extension is a PECL extension recommended by LiteSpeed to optimize timezone lookups for PHP scripts.
- Open WHM and visit "WHM / Plugins / LiteSpeed Web Server Plugin"
- Click "Resolve Now" after the "Some pre-built EasyApache PHP installations may be missing the timezoneDB extension. This will severely impact PHP performance" warning
- Click "Confirm" on the next page
- After installation is complete, another page will load, click ok, and you will be redirected to the LiteSpeed plugin page.
You can find further information regarding TimeZoneDB in LiteSpeed's documentation.