Does php's date_default_timezone_set adjust to daylight saving?
I have this code, and wonder if it will always result in the correct Stockholm time?
date_default_timezone_set('Europe/Stockholm');
$timestamp = date("Y-m-d H:i:s");
PHP doesn't handle DST automatically. You have to check
if (date('I', time()) == 1) ... the time is in DST mode ("0" = not)
Then you should adust time accordingly.
(Note: 'I' in capital. I have just checked it and it works.)
Yes this should always result in the right time.
As long as your timezone is listed in the following link, timestamp should be relative to the correct timezone.
http://www.php.net/manual/en/timezones.php
Related
I'm fairly new to PHP so forgive me if this is a stupid mistake that I haven't spotted
I've run into a problem where in our current system where we currently used strtotime and it was returning our date an hour ahead than it actually was set. E.g 1:15pm became 2:15pm when I set the timezone to be European rather than GMT.
I read that strotime had this problem but I can't get it to observe a different timezone if I try and set it.
So I tried working with PHPs DateTime instead.
The user enters the time and they select it as 1:15PM however we want to store it as 13:15. So I did this:
$t = DateTime::createFromFormat('h:i A', $venue['startTime']);
$t_24 = $t->format('H:i:s');
Then I try and create my Date object
$d = DateTime::createFromFormat('d-m-Y H:i:s', $venue['startDay'] . ' ' . $t_24);
$d->setTimezone(new DateTimeZone('America/New_York'));
echo ' ' . $d->getTimestamp();
Trying to set the timezone after the object is set because apparently it doesn't work if you add the timezone as the third argument in createFromFormat
My computers time is currently observing European time currently GMT+1 because we're observing daylight savings time in the UK, I select the time set on the through our system as 1:15pm and because I've set the timezone I expect the timestamp outputted equivalent to 7:15am as it's six hours behind European time, however when I convert the timestamp 1500639300 it's still equal to 2:15 PM. Probably done something stupid but can't quite figure out what? Any help would be appreciated :)
Timestamps have no time zone - they are always in UTC time. If you want to save timezone related data use another format! For example save in H:i:s, as you need it.
you can use gmdate() Function for this
<?php $current_time = gmdate('Y-m-d H:i:s'); ?>
http://php.net/manual/en/function.gmdate.php
Short question but I can't get my finger on it. This piece of code:
$date = '2015-12-08T00:00:00+01:00';
echo date('D', strtotime($date));
returns Mon while
$date = '2015-12-08T00:00:00';
echo date('D', strtotime($date));
returns Tue. Why is that? The +01:00 is for the timezone, but that should not affect the day in my opinion.
First I've looked up that 08-12-2015 is in fact a Tuesday, so now we know the first one is incorrect.
PHP's date() is an Unix timestamp according to their own docs.
My belief is that adding the +1 as a timezone triggers the calculation to the +0 timezone (UTC) when asking for the day of the week and therefore returns 23:00 on monday as the current UTC time.
You can specify the timezone before executing the rest of the code: date_default_timezone_set('Europe/Amsterdam');
<?php
date_default_timezone_set('Europe/Amsterdam'); //this is an example of a +1 timezone, choose one from http://php.net/manual/en/timezones.php
$date = '2015-12-08T00:00:00+01:00';
echo date('D', strtotime($date) );
?>
strtotime will parse your date string using the supplied time zone or using the default timezone if unspecified. We can't see from the code you've posted what time zone your server is configured to, but once the date is parsed and converted to your time zone, the time may legitimately occur in the previous day, hence why you're seeing 'Mon'.
Either supply a time zone in the strtotime call via the now argument or set one globally with date_default_timezone_set.
I have a simple date time in the format 10/20 4:30PM. I want it to display in the format
10/24 1:30PM -007. I am saying date('Y-m-d H:i:sT', $time_recieved) assuming T is for timezone. But It is still not giving the time zone. What might be the reason? Is there any other format I am missing?
What you want is O not T I believe.
Check the PHP date page for all the format listings possible.
http://php.net/manual/en/function.date.php
You can have a look at the official manual of PHP : date ();
http://www.php.net/manual/en/function.date.php
I tested that and I used on my server with :
$time = time();
echo date('Y-m-d H:i:s T', $time);
it shows the timezone perfectly. Check $time_received, it might be an erroneous number, try with local time with time´() function to ensure that it's OK.
Good luck
I can't see my location time with following php function:
echo date("y-m-d h:m:s A");
it's show 12-05-05 08:05:12 AM BUT it's 12-05-05 12:40:12 PM NOW
Can anyoe fix this issue..
Thanks.
Set your preferred timezone in php.ini:
[Date]
; Defines the default timezone used by the date functions
; http://php.net/date.timezone
date.timezone = Asia/Manila
You can see the list of supported timezones here.
Or you can go other way, use date_default_timezone_set().
Set setlocale function. Here this the description
Fix your server time, or use this:
http://php.net/manual/en/function.date-default-timezone-set.php
You are using m, but it's used to represent month, not minutes.
This is probably what you'd like to do:
echo date("y-m-d h:i:s A");
After that, you're either using the wrong timezone or the servers time is badly setup. If you have access to the server run date in a terminal.
Apart from Blake comment, i suggets try fixing your time zone, add +/- time you require
time , example
$timediff = 10;
$diff= $timediff+ ($timediff* 60 * 60)
I'm using the unix timestamp to show when a message was posted in my project but when I came to displaying the exact time of the post I realized it was about 12 hours behind.
I'm in the UK and my server is in the US (might be the problem).
Is there a simple way of converting the unix timestamp into a readable British time?
$timestamp = time();
print date("F jS, Y", strtotime($timestamp));
Any help would be great,
Thanks!
At the top of your script, write:
date_default_timezone_set('Europe/London');
Or if your PHP is >= 5.2.0:
date_timezone_set('Europe/London');
Just call date_timezone_set with the appropriate parameter for the UK at the start of your script when displaying the dates (not when recording them; I 'm not sure, but it might result in the "wrong" timestamps being recorded).
Edit: The timezone you want is 'Europe/London'.
try date-default-timezone-set.
date_default_timezone_set('Europe/London');
Use date_default_timezone_set('Europe/London'); to set the time zone to London's time. Not sure if it works with summer/winter time.
the simplies way is to substruct gmt offset. e.g:
echo(date('Y-m-d h:i'), $myvalue - 60 * 60 * $nhours));
where $nhours - time defference in hours.
This one worked for me
date_default_timezone_set('Europe/London');