Based on the answer from celsown ( https://stackoverflow.com/a/73807773/5538923 ), I could print the full date in the local language in PHP from a date field in the DB with this instruction:

echo IntlDateFormatter::formatObject(IntlCalendar::fromDateTime($row["dataA"], "en_US"), 'eeee d MMMM y', "it_IT");

The result was: "lunedì 2 dicembre 2024".