What are the best practices for handling timezones and calendars when using IntlDateFormatter?

When using IntlDateFormatter in PHP, it's important to handle timezones and calendars properly to ensure accurate date and time formatting. To do this, you should set the timezone and calendar options when creating the IntlDateFormatter instance. Additionally, make sure to use the correct timezone identifiers and calendar types supported by the Intl extension.

// Create a new IntlDateFormatter instance with timezone and calendar options
$formatter = new IntlDateFormatter('en_US', IntlDateFormatter::SHORT, IntlDateFormatter::SHORT, 'America/New_York', IntlDateFormatter::GREGORIAN);

// Format a date using the formatter
$date = new DateTime();
echo $formatter->format($date);