CODEWITHSUNDEEP
phptime
Jeff
Jeff

Reputation: 719

Strange Results from a Timestamp Calculation PHP

I'm working with php timestamps to develop a calendar of events page.

On the Calendar page, I've written a function to determine a few things right away such as:

$first_of_month = strtotime(date('m',time()).'/01/'.date('Y',time()));

Now - using the the first day of the month, I must determine the most recent Sunday prior to that day (the Calendar starts on Sundays), so I run it through this:

date('m/d/Y--D-w',($first_of_month - (date('w',$first_of_month)*86400)))

the problem is it's not returning what I would expect.

Currently we're in April, 2016. Day 1 of April returns 5 when run through the date('w') format. So, 5 days back from that Friday should be day 0 (Sunday). But I get Saturday.

What am I missing here?

Upvotes: 2

Views: 66

Answers (2)

Scopey
Scopey

Reputation: 6319

PHPs date word parser is extremely powerful. If you're looking for the last Sunday of last month, you can just ask!

$date = new DateTime();
if($date->format('w') != 0) {
    $date->modify('last Sunday of last month');
}

See ideone here: https://ideone.com/sWsxPW

Upvotes: 1

dlolsen
dlolsen

Reputation: 132

Does the 1 hour offset put you past midnight (into tomorrow)? I'd recommend you double check your server offset: date_default_timezone_get();

If it is wrong, use date_default_timezone_set('America/Los_Angeles') (obviously replacing 'America/Los_Angeles' as appropriate. php: date_default_timezone_set()

As long as that's correct you could get the last Sunday by using strtotime() on $first_of_month:

date('m/d/Y--D-w' ,strtotime('last Sunday',$first_of_month));

Upvotes: 1

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