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

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;
}