Find every Sunday between two dates

Question

I have $fromdate and $todate variables. I want a function that can calculate the dates of each Sunday existing in between $fromdate an

Answer 1

Use this function:

function getDateForSpecificDayBetweenDates($startDate, $endDate, $weekdayNumber)
{
    $startDate = strtotime($startDate);
    $endDate = strtotime($endDate);

    $dateArr = array();

    do
    {
        if(date("w", $startDate) != $weekdayNumber)
        {
            $startDate += (24 * 3600); // add 1 day
        }
    } while(date("w", $startDate) != $weekdayNumber);


    while($startDate <= $endDate)
    {
        $dateArr[] = date('Y-m-d', $startDate);
        $startDate += (7 * 24 * 3600); // add 7 days
    }

    return($dateArr);
}

The function call to get dates for all Sunday's in year 2010:

$dateArr = getDateForSpecificDayBetweenDates('2010-01-01', '2010-12-31', 0);

print "
";
print_r($dateArr);


The reuslt:

Array
(
    [0] => 2010-01-03
    [1] => 2010-01-10
    [2] => 2010-01-17
    [3] => 2010-01-24
    [4] => 2010-01-31
    [5] => 2010-02-07

     ................
     ................
     ................

    [47] => 2010-11-28
    [48] => 2010-12-05
    [49] => 2010-12-12
    [50] => 2010-12-19
    [51] => 2010-12-26
)