PHP - 从星期六开始，每周一周

Question

I know I could use date("W",$timestamp) to get the number of week in the year. But the week starts on Monday. Is there any way which I could get the number of week in year with the week starting on Saturday?

Answer 1

You can use the IntlCalendar class (install intl extension)

$cal = IntlCalendar::createInstance();
$cal->set(2013, 5 /* June */, 30); // A Sunday
$cal->setFirstDayOfWeek(IntlCalendar::DOW_SATURDAY);
echo IntlDateFormatter::formatObject($cal, 'w');