- strftime: documentation ( source)
- date_default_timezone_set: documentation ( source)
- strtotime: documentation ( source)
- setlocale: documentation ( source)
<?php
setlocale(LC_ALL, 'pt_BR', 'pt_BR.utf-8', 'pt_BR.utf-8', 'portuguese');
date_default_timezone_set('America/Sao_Paulo');
echo strftime("%d de %B de %Y", strtotime('today'));