PHP: Week starts on Monday, but “monday this week” on a Sunday gets Monday next week

Question

Here\'s a summary of the issue: On Sundays, strtotime(\'this week\') returns the start of next week.

In PHP, the week seems to start on Monday. But, on

Answer 1

This is for thos looking for a friendly solution that works with any day.

function getWeekStart($week_start_day = "Monday") {
    $week_days = array("Sunday"=>0,"Monday"=>1,"Tuesday"=>2,"Wednesday"=>3,"Thursday"=>4,"Friday"=>5,"Saturday"=>6,);

    if(!isset($week_days[$week_start_day])) {
        return false;
    } else {
        $start_day = $week_days[$week_start_day];

        $today = date("w");
        $one_day = (60 * 60 * 24);

        if($today < $start_day) {
            $days_difference = 7 - ($start_day - $today);
        } else {
            $days_difference = ($today - $start_day);
        }

        $week_starts = strtotime(date("Y-m-d 00:00:00")) - ($one_day * $days_difference);

        return $week_starts;
    }
}

//Test: If today is Monday, it will return today's date
echo date("Y-m-d H:i:s", getWeekStart("Monday"));

Answer 2

I think instead of trying

echo date('Y-m-d', strtotime('monday this week', strtotime('last sunday')));

you should try

echo date('Y-m-d', strtotime('monday last week'));

Answer 3

Try this code

// set current date
$date = date("m/d/Y");
$ts = strtotime($date); // also $ts = time();

// find the year and the current week
$year = date('o', $ts);
$week = date('W', $ts);
// print week for the current date
$i = 1; // 1 denotes the first day of week

$ts = strtotime($year.'W'.$week.$i);
echo $day = date("l", $ts); // generate the name of day
echo "<br>";
echo $day = date("Y-m-d", $ts); // generate the date

You will get the the date of current week, whether you are on monday you will get the date of that monday.

Answer 4

If you want the most recent monday:

function mostRecentMonday(){
  if(date("w") == 1){
   return strtotime("midnight today");
  } else {
   return strtotime("last monday");
  }
}

Easy to modify to use DateTime, or, to even specify a different date to use as the base.

Answer 5

Here is how you can get Monday of current week:

echo date("Y-m-d", strtotime(date('o-\\WW')));

Answer 6

This answer is late, but it's something that I've been struggling with. Every solution I've tried so far has malfunctioned for one reason or another. This is what I ended up with that worked for me. (though it may be look pretty, it at least works).

$thisMonday =  strtotime('next Monday -1 week', strtotime('this sunday'));