Loop through Calendar Weeks

Question

I built this function in my class:

class CalenderWeekHelper {
    public static function getCalenderWeek($year = 2016)
    {
        for ($i=1; $i <= 52; $i++)
        {
             $from = date("d.m.Y", strtotime("{$year}-W{$i}-1")); //Returns the date of monday in week
             $to   = date("d.m.Y", strtotime("{$year}-W{$i}-7")); //Returns the date of sunday in week
             $weekArray[$i] = array('start' => $from, 'end' => $to);

        }
        return $weekArray;
    }
}

And call it like this:

$kw = CalenderWeekHelper::getCalenderWeek(2015);
echo $kw[1]['start']

But it still echos me following:

01.01.1970

I just want to loop trough all calender weeks, anyone know how to solve this?

Week number should be with length of 2 ---W01, W02 etc.. – Subin Thomas Oct 30 '15 at 16:21 — Subin Thomas, Oct 30 '15 at 16:21

score 3 · Accepted Answer · edited May 23 '17 at 12:23

3

See the following answer for the correct format of strtotime: How to convert week number and year into unix timestamp?

The day returned is a monday, so you can add 6 days to get the sunday:

$week = sprintf('%02s', $i); // make sure it is formatted in double figures
$from = date("d.m.Y", strtotime("{$year}W{$week}")); //Returns the date of monday in week
$to   = date("d.m.Y", strtotime("{$year}W{$week} +6 days")); //Returns the date of sunday in week

edited May 23 '17 at 12:23

Community

1
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answered Oct 30 '15 at 16:14

moorscode

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Thanks It works so far one question what does your first line do excatly ($week = sprintf('%02s', $i);)? – Tina Turner Oct 30 '15 at 16:25
You should look up http://php.net/sprintf for specific details of the function. But this way it takes the weeknumber and adds a 0 if it's below 10, so it always has a length of 2 "04". % means variable, 02 means at least 2 length and fill with 0's, 's' means output a string. – moorscode Oct 30 '15 at 17:16

Loop through Calendar Weeks

1 Answers1