In what ways can hosting environments, such as free hosting services like funpic.de, affect the behavior of PHP scripts that involve time calculations?

Hosting environments can affect the behavior of PHP scripts involving time calculations due to differences in server configurations, time zones, and PHP settings. To ensure consistent behavior, it is recommended to explicitly set the default time zone in your PHP script using the date_default_timezone_set() function.

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

// Your PHP script with time calculations here