Get first day of week in PHP?

Question

Given a date MM-dd-yyyy format, can someone help me get the first day of the week?

Answer 1

Another way to do it....

$year = '2014';
$month = '02';
$day = '26';

$date = DateTime::createFromFormat('Y-m-d H:i:s', $year . '-' . $month . '-' . $day . '00:00:00');
$day = date('w', $date->getTimestamp());

// 0=Sunday 6=Saturday
if($day!=0){

   $newdate = $date->getTimestamp() - $day * 86400;  //86400 seconds in a day

   // Look for DST change 
   if($old = date('I', $date->getTimestamp()) != $new = date('I', $newdate)){
       if($old == 0){
           $newdate -= 3600;  //3600 seconds in an hour
       } else {
           $newdate += 3600;
       }
   }

   $date->setTimestamp($newdate);
}

echo $date->format('D Y-m-d H:i:s');

Answer 2

Keep it simple :

<?php    
$dateTime = new \DateTime('2012-05-14');
$monday = clone $dateTime->modify(('Sunday' == $dateTime->format('l')) ? 'Monday last week' : 'Monday this week');
$sunday = clone $dateTime->modify('Sunday this week');    
?>

Source : PHP manual

Answer 3

How about this?

$first_day_of_week = date('m-d-Y', strtotime('Last Monday', time()));
$last_day_of_week = date('m-d-Y', strtotime('Next Sunday', time()));

Answer 4

$monday = date('d-m-Y',strtotime('last monday',strtotime('next monday',strtotime($date))));

You have to get next monday first then get the 'last monday' of next monday. So if the given date is monday it will return the same date not last week monday.

Answer 5

I found this solution helpful. Just subtract if it isn't monday to get the previous Monday. I am using $lower_date as the date I pulled from a query that I then need to reconcile to the previous Monday.

//set this up to go backwards until you find monday
while(date('D',strtotime($lower_date))!='Mon'){
    $lower_date = date('Y-m-d', strtotime($lower_date . ' - 1 day')); //increase the upper spec
}

Answer 6

strtotime('this week', time());

Replace time(). Next sunday/last monday methods won't work when the current day is sunday/monday.