How can PHP beginners adjust time zones for server-based scripts?

PHP beginners can adjust time zones for server-based scripts by setting the default time zone using the `date_default_timezone_set()` function at the beginning of their script. This function allows you to specify the time zone you want to use, such as 'UTC', 'America/New_York', or 'Asia/Tokyo'. By setting the default time zone, all date and time functions in the script will use the specified time zone.

// Set the default time zone to UTC
date_default_timezone_set('UTC');