What are the potential pitfalls of using setlocale() for translating weekdays and month names in PHP?

Potential pitfalls of using setlocale() for translating weekdays and month names in PHP include compatibility issues across different operating systems and servers, as well as dependency on the system's locale settings. To avoid these pitfalls, a more reliable approach is to use the IntlDateFormatter class in PHP, which provides a consistent way to format dates and times according to a specific locale.

$formatter = new IntlDateFormatter('en_US', IntlDateFormatter::FULL, IntlDateFormatter::FULL, 'America/New_York', IntlDateFormatter::GREGORIAN, 'EEEE, MMMM d, y');
echo $formatter->format(new DateTime());