how do i get the first day of the week?

chris10121

How can I get the first day of the week in php? I probably have to write a function, but i am not good with dates.

I'm looking for a function where you input the week number and the year, and it will return the timestamp of the first sunday of that week.

Thanks in advance!

chris10121

I found this one online but it was posted on a forum from 2003 and times out. I am using php version 5, so I imagine that either this is badly coded or something has been deprecated or doesn't function the way it did at the time this was made. Any suggestions on making it work with php 5?

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function firstDayofWeek($week,$year) 

{

    $timestamp = mktime(0, 0, 0, 1, 1, $year);

    if( $week == 1 ) 

    {

        while ( date("W",$timestamp) < 2 ) 

        {

            $timestamp += (60*60*24);

        }

        $timestamp -= (60*60*24*8);

    }

    else 

    {

        while ( date("W",$timestamp) < $week ) 

        {

            $timestamp += (60*60*24);

        }

        $timestamp -= (60*60*24);

    }

    return $timestamp;

}

Pumpernikkeli

I'm struggling with same problem, i made something similiar to code that you posted, but it goes wrong when year changes... propably because week 1 sometimes begin in December.

Working piece of code would be highly appreciated :)

Edit: ok, now i found something, that seems to work

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   function getFirstDayOfWeek($year, $weeknr)

{

$offset = date('w', mktime(0,0,0,1,1,$year));

$offset = ($offset < 5) ? 1-$offset : 8-$offset;

$monday = mktime(0,0,0,1,1+$offset,$year);

$date = strtotime('+' . ($weeknr - 1) . ' weeks', $monday);

return date('m/d/Y',$date);

}

This gives monday as first day of week, so you might need to do some changes if you need sunday.

johnboypro

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<?php $firstday = strtotime('Last Sunday'); ?>

how do i get the first day of the week?

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