How to get weeks starting on sunday?

Question

I need to get week number in php where week should be calculated from sunday. By default its from monday. Please help me to find a way how to get week number considering sun

Answer 1

Try this one. to get sunday day must -1 day.

$date = "2015-05-25";
echo date("W", strtotime("-1 day",strtotime($date)));

Answer 2

Try this:

$week = intval(date('W'));

if (date('w') == 0) {            // 0 = Sunday
   $week++;
}

echo $week;

Not sure if the logic is right though;

Answer 3

Tested in php 5.6 Debian 7

function getWeekNumber(\DateTime $_date)
{
    $week = intval($_date->format('W'));

    if(intval($_date->format('w')) == 0) {
        $week = intval($_date->format('W')) == ( 52 + intval($_date->format('L')) ) ? 1 : $week + 1;
    }

    return $week;
}

Answer 4

You should try with strftime

$week_start = new DateTime();
$week = strftime("%U");  //this gets you the week number starting Sunday
$week_start->setISODate(2012,$week,0); //return the first day of the week with offset 0
echo $week_start -> format('d-M-Y'); //and just prints with formatting 

Answer 5

To expand on silkfire answer and allow for it wrapping around years

   if($date->format('w') == 0){
        if(date('W',strtotime($date->format('Y')."-12-31"))==52 and $date->format('W') == 52){
            $week = 1;
        }
        elseif(date('W',strtotime($date->format('Y')."-12-31"))==53 and $date->format('W') == 53){
            $week = 1;
        }
        else{
            $week++;
        }
    }

Answer 6

I solved this like this:

function getWeekOfYear( DateTime $date ) {

        $dayOfweek = intval( $date->format('w') );

        if( $dayOfweek == 0 ) {
            $date->add(new DateInterval('P1D'));
        } 

        $weekOfYear = intval( $date->format('W') );

        return $weekOfYear;
}