Get Start and End Days for a Given Week in PHP

Question

I\'m trying to get the week range using Sunday as the start date, and a reference date, say $date, but I just can\'t seem to figure it out.

For example,

Answer 1

In trying to find a more streamlined version of the accepted answer by Paolo Bergantino, I discovered a really nice way to get this done:

function x_week_range2($date) {
  $ts = strtotime($date);
  $start = strtotime('sunday this week -1 week', $ts);
  $end = strtotime('sunday this week', $ts);
  return array(date('Y-m-d', $start), date('Y-m-d', $end));
}

The 'sunday this week' string always means "The Sunday at the end of this week." If used on a timestamp that falls on a Sunday, it will be the following Sunday. This lets you avoid the need for the ternary operator in Paola's solution.

Answer 2

Without doing so much string manipulation, you can do some simple math on the timestamps.

function getDateRange(&$start, &$end, $date) {
  $seconds_in_day = 86400;
  $day_of_week = date("w", $date); 
  $start = $date - ($day_of_week * $seconds_in_day);
  $end = $date + ((6 - $day_of_week) * $seconds_in_day);
}

Answer 3

Here's my version, which uses a similar notion to Clay's:

/**
 * Start of the week
 *
 * 0 = Sun, 1 = Mon, etc.
 */
define( 'WEEK_START', 0 );

/**
 * Determine the start and end dates for
 * the week in which the specified date
 * falls
 *
 * @param $date Date in week
 * @param $start Week start (out)
 * @param $end Week end (out)
 */
function week_bounds( $date, &$start, &$end ) {
    $date = strtotime( $date );
    // Find the start of the week, working backwards
    $start = $date;
    while( date( 'w', $start ) > WEEK_START ) {
        $start -= 86400; // One day
    }
    // End of the week is simply 6 days from the start
    $end = date( 'Y-m-d', $start + ( 6 * 86400 ) );
    $start = date( 'Y-m-d', $start );
}

Lightly tested. Code may not be bulletproof, or handle dates in the far past or future. Use at your own risk. Do not immerse the code in water. Do not show the code to those of a nervous disposition, or with a hatred of the dollar sign. Not tested on animals. Safe for use by vegetarians. Author warrants that the code will never, ever speak to you. In the unlikely event that the code does try to engage you in conversation, the author advises you to disregard any and all advice it gives.

Answer 4

Use this to get the "week" number from any given date.

//October 29, 2009 is my birthday
echo $week date('W', strtotime('2009-10-29'));
//OUTPUT: 44
//October 29 is the 44th week in the year 2009

Now pass the parameters for getWeekDates function as "year (2009)" and "$week".

function getWeekDates($year, $week, $start=true){
        $from = date("Y-m-d", strtotime("{$year}-W{$week}-1")); //Returns the date of monday in week
        $to = date("Y-m-d", strtotime("{$year}-W{$week}-7"));   //Returns the date of sunday in week

        if($start) {
            return $from;
        } else {
            return $to;
        }
        //return "Week {$week} in {$year} is from {$from} to {$to}.";
    }

For More Info Please refer this link http://blog.ekini.net/2009/07/09/php-get-start-and-end-dates-of-a-week-from-datew/

Answer 5

A simple code to return the days from start DateTime and end DateTime. Using gmdate() method you can format date/time.

$start_str_date = strtotime($start_date);
$end_str_date = strtotime($end_date);
$interval_days = $end_str_date - $start_str_date;
$days = gmdate('d',$interval_days);
echo $days;

Answer 6

Base on @jjwdesign's answer, I developed a function that can calculate the beginning and ending of a week for a specific date using the DateTime class. WILL WORK ON PHP 5.3.0++

The difference is you can set the day you want as the "beginning" between 0 (monday) and 6 (sunday).

Here's the function :

if(function_exists('grk_Week_Range') === FALSE){
    function grk_Week_Range($DateString, $FirstDay=6){
        #   Valeur par défaut si vide
        if(empty($DateString) === TRUE){
            $DateString = date('Y-m-d');
        }

        #   On va aller chercher le premier jour de la semaine qu'on veut
        $Days = array(
            0 => 'monday',
            1 => 'tuesday',
            2 => 'wednesday',
            3 => 'thursday',
            4 => 'friday',
            5 => 'saturday',
            6 => 'sunday'
        );

        #   On va définir pour de bon le premier jour de la semaine     
        $DT_Min = new DateTime('last '.(isset($Days[$FirstDay]) === TRUE ? $Days[$FirstDay] : $Days[6]).' '.$DateString);
        $DT_Max = clone($DT_Min);

        #   On renvoie les données
        return array(
            $DT_Min->format('Y-m-d'),
            $DT_Max->modify('+6 days')->format('Y-m-d')
        );
    }
}

Results :

print_r(grk_Week_Range('2013-08-11 16:45:32', 0));
print_r(grk_Week_Range('2013-08-11 16:45:32', 1));
print_r(grk_Week_Range('2013-08-11 16:45:32', 2));
print_r(grk_Week_Range('2013-08-11 16:45:32', 3));
print_r(grk_Week_Range('2013-08-11 16:45:32', 4));
print_r(grk_Week_Range('2013-08-11 16:45:32', 5));
print_r(grk_Week_Range('2013-08-11 16:45:32', 6));

Array
(
    [0] => 2013-07-29
    [1] => 2013-08-04
)
Array
(
    [0] => 2013-07-30
    [1] => 2013-08-05
)
Array
(
    [0] => 2013-07-31
    [1] => 2013-08-06
)
Array
(
    [0] => 2013-07-25
    [1] => 2013-07-31
)
Array
(
    [0] => 2013-07-26
    [1] => 2013-08-01
)
Array
(
    [0] => 2013-07-27
    [1] => 2013-08-02
)
Array
(
    [0] => 2013-07-28
    [1] => 2013-08-03
)