Online PHP editor | refs for uG9NT

<?php $sunday = new DateTimeImmutable('Sunday'); $monday = new DateTimeImmutable('Monday'); foreach (new DatePeriod($sunday, new DateInterval('P1D'), 6) as $date) { $dow = $date->format('w'); $weekday = $sunday->add(new DateInterval('P' . $dow . 'D')); $dowISO = $date->format('N'); $weekdayISOM = $monday->add(new DateInterval('P' . ($dowISO - 1) . 'D')); $weekdayISOS = $sunday->add(new DateInterval('P' . $dowISO . 'D')); printf("STD: %s = %s\nISOM: %s = %s\nISOS: %s = %s\n\n", $dow, $weekday->format('l'), $dowISO, $weekdayISOM->format('l'), $dowISO, $weekdayISOS->format('l')); }