<?php ini_set("intl.error_level", E_WARNING); $c = new IntlGregorianCalendar(NULL, 'pt_PT'); var_dump($c->isWeekend(1, 2)); var_dump($c->isWeekend("jhhk")); var_dump(intlcal_is_weekend($c, "jj")); var_dump(intlcal_is_weekend(1));