$user_timezone_from = 'UTC';
$user_timezone_to = 'Pacific/Auckland';
$date = new DateTime('2015-08-21 14:00', new DateTimeZone($user_timezone_from));
$date->setTimezone(new DateTimeZone($user_timezone_to));
echo $cur_gmt_date = $date->format('Y-m-d H:i:s');
$date = new DateTime('2015-09-29 14:00', new DateTimeZone($user_timezone_from));
$date->setTimezone(new DateTimeZone($user_timezone_to));
echo $cur_gmt_date = $date->format('Y-m-d H:i:s');
I am getting different results for this.
2015-08-22 02:00:00
2015-09-30 03:00:00 It should be 2015-09-30 02:00:00
Why I got wrong value?
Wikipedia tells me that on the last Sunday of September there's a DST change in New Zealand. Hence a one hour difference to Summer Time.
Related
What I want to get are
today's 00:00:00
week start day's 00:00:00
month start day's 00:00:00
year start day's 00:00:00
So I write the code,
$today = new \DateTime();
$weekStart = new \DateTime();
$monthStart = new \DateTime();
$yearStart = new \DateTime();
$weekStart->modify('last sunday');
$monthStart->modify('first day of this months');
$yearStart->modify('first day of this year');
print $today->format('Y-m-d h:i:s')."\n";
print $weekStart->format('Y-m-d h:i:s')."\n";
print $monthStart->format('Y-m-d h:i:s')."\n";
print $yearStart->format('Y-m-d h:i:s')."\n";
It gave me the result:
2018-11-13 09:34:02
2018-11-11 12:00:00
2018-11-01 09:34:02
2018-11-01 09:34:02
I have two questions.
How can I make each DateTime 00:00:00??
How can I get the first day of year???
PHP's date parsing is somewhat tricky. Here's the code snippet which does what you want:
$today = new \DateTime('midnight');
$weekStart = new \DateTime('midnight last sunday');
$monthStart = new \DateTime('midnight first day of this month');
$yearStart = new \DateTime('midnight first day of january this year');
echo $today->format('Y-m-d H:i:s')."\n";
echo $weekStart->format('Y-m-d H:i:s')."\n";
echo $monthStart->format('Y-m-d H:i:s')."\n";
echo $yearStart->format('Y-m-d H:i:s')."\n";
DateTime value can be set upon construction; there's no need to call DateTime::modify().
Add midnight to get the time set to 00:00:00.
first day this year doesn't work in PHP, you need to use first day of january this year instead.
Reference: PHP Documentation of relative date formats.
you can try:
$date->setTime(0, 0, 0);
$date = new DateTime('2012-07-22');
echo $date->format('Y-m-d 00:00:00');
NO need to create a object of datetime(), use above code to get current date with time 00:00:00
I am trying to getting last friday date PST time, i am getting 15-11-2018,
Here is my code,
public function getPSTCurrentTime($time=null) {
$dateTime = new \DateTime($time, (new \DateTimeZone('UTC'))); // get current time as UTC/GMT timezone
$dateTime->setTimezone(new \DateTimeZone('PST')); // convert time as PST timezone
return $dateTime;
}
$date = new getPSTCurrentTime('last friday')->format('Y-m-d h:i:s');
The output i am getting was 15-11-2018, But i am expecting output was 16-11-2018
Try this,
$pst = new DateTimeZone('America/Los_Angeles');
$last_friday = new DateTime('last friday', $pst);
echo $last_friday->format('Y-m-d H:i:s'); // "2018-11-16 00:00:00"
After Comment:
To get the date based on the current timezone, then use date_default_timezone_get
$current_timezone = new DateTimeZone(date_default_timezone_get());
$last_friday = new DateTime('last friday', $current_timezone);
Output:
2018-11-16 00:00:00
My linux box is set to use UTC. Given a timezone and a date, I want to get the date range so that I can query the database for records created on any given day. For instance, if it is now 2018-03-24 at 9am in America/Denver timezone. I want to get the start and end times for this date in UTC. How can I get the UTC equivilant of the beginning of that date?
<?php
$date = new DateTime(date('Y-m-d H:i:s'), new DateTimeZone('America/Denver'));
$date->setTimezone(new DateTimeZone('UTC'));
echo $date->format('Y-m-d 00:00:00');
?>
this returns 2018-03-24 00:00:00 which is not correct. Any pointers?
Try using this function.
function UTCTimeToLocalTime($time, $tz = '', $FromDateFormat = 'Y-m-d H:i:s', $ToDateFormat = 'Y-m-d H:i:s')
{
if ($tz == '')
$tz = date_default_timezone_get();
$utc_datetime = DateTime::createFromFormat($FromDateFormat, $time, new
DateTimeZone('UTC'));
$local_datetime = $utc_datetime;
$local_datetime->setTimeZone(new DateTimeZone($tz));
return $local_datetime->format($ToDateFormat);
}
echo UTCTimeToLocalTime('2015-07-01 13:30:00','America/Denver');
function LocalTimeToUTCTime($time, $tz = '', $FromDateFormat = 'Y-m-d H:i:s', $ToDateFormat = 'Y-m-d H:i:s')
{
if ($tz == '')
$tz = date_default_timezone_get();
$utc_datetime = DateTime::createFromFormat($FromDateFormat, $time, new
DateTimeZone($tz));
$local_datetime = $utc_datetime;
$local_datetime->setTimeZone(new DateTimeZone('UTC'));
return $local_datetime->format($ToDateFormat);
}
You feed the DateTime constructor with a bogus local time:
new DateTime(date('Y-m-d H:i:s'), newDateTimeZone('America/Denver'));
^^^^
You tell PHP that's a Denver local time but you don't really know. Since the string does not contain time zone information PHP will use the default time zone.
Just drop date(). It serves no purpose and only makes things harder.
<?php
$date = new DateTime('now', new DateTimeZone('America/Denver'));
echo $date->format('r'), PHP_EOL;
$date->setTimezone(new DateTimeZone('UTC'));
echo $date->format('r'), PHP_EOL;
Sun, 25 Mar 2018 06:11:21 -0600
Sun, 25 Mar 2018 12:11:21 +0000
I' am trying to covert date time to hours so that today's date and time matches with the database date and time.
date_default_timezone_set("Pacific/Fiji");
today = date('Y-m-d H:i'); // Returns 2014-05-01 11:01
$date = DateTime::createFromFormat('Y-m-d h:i', '2014-05-02 11:05');
echo $date->format('Y-m-d H:i'); // Returns 2014-05-02 11:05
What am I doing wrong in this code that its returning 2014-05-02 11:05 whereas it should return 2014-05-01 23:05
You saved 2014-05-02 11:05 in Fiji timezone to $date. Afterwards you display the date in Fiji timezone, so of course no change is made.
I don't really understand your question but from the code you provide I guess that what you probably want to do is the following:
$tzFiji = new DateTimeZone('Pacific/Fiji');
$tzBerlin = new DateTimeZone('Europe/Berlin');
$tzCurrent = new DateTimeZone(date_default_timezone_get());
$date = DateTime::createFromFormat('Y-m-d h:i', '2014-05-02 11:05', $tzFiji);
echo $date->format('Y-m-d H:i'); # date in Fiji's timezone
$date->setTimezone($tzBerlin);
echo $date->format('Y-m-d H:i'); # date in Berlin's timezone
$date->setTimezone($tzCurrent);
echo $date->format('Y-m-d H:i'); # date in php's currently set timezone
i am new to php.
i want to write a function where i need user to input date in any date format including DST,into GMT format and again later back into the original entered format.please any body help me.
Although the gmdate functions are available. If you are using PHP 5.2 or greater, then consider using the DateTime object.
Here's code to switch to GMT
$date = new DateTime();
$date->setTimezone(new DateTimeZone('GMT'));
and back to the default timezone...
$date = new DateTime('2011-01-01', new DateTimeZone('GMT'));
$date->setTimezone(new DateTimeZone(date_default_timezone_get()));
Using the DateTime object lets your create a datetime, just like the procedural functions, except that you keep a reference to an instance.
e.g.
// Get a reference to Christmas of 2011, at lunch time.
$date = new DateTime('2011-12-25 13:00:00');
// Print the date for people to see, in whatever format we specify.
echo $date->format('D jS M y');
// Change the timezone to GMT.
$date->setTimezone(new DateTimeZone('GMT'));
// Now print the date/time it would in the GMT timezone
// as opposed to the default timezone it was created with.
echo $date->format('Y-m-d H:i:s');
// Just to show of some more, get the previous Sunday
$date->modify('previous Sunday');
There's a whole lot of functions you can use, that are much more readable that the procedural functions.
Explicit example of converting from a timezone to GMT
$melbourne = new DateTimeZone('Australia/Melbourne');
$gmt = new DateTimeZone('GMT');
$date = new DateTime('2011-12-25 00:00:00', $melbourne);
$date->setTimezone($gmt);
echo $date->format('Y-m-d H:i:s');
// Output: 2011-12-24 13:00:00
// At midnight on Christmas eve in Melbourne it will be 1pm on Christmas Eve GMT.
echo '<br/>';
// Convert it back to Australia/Melbourne
$date->setTimezone($melbourne);
echo $date->format('Y-m-d H:i:s');
Using your Asia/Kolkata to America/New_York
date_default_timezone_set('Asia/Kolkata');
$date = new DateTime('2011-03-28 13:00:00');
$date->setTimezone(new DateTimeZone('America/New_York'));
echo $date->format("Y-m-d H:i:s");
//Outputs: 2011-03-28 03:30:00
Use the gmdate function to convert to GMT time.
For example
$d = '2011-03-28 12:05:20';
$gmt = gmdate('Y-m-d H:i:s',strtotime($d));
// Convert local time to gmt
public function convertTime($timezone,$time){
$selectedtime = date("Y-m-d H:i",strtotime($time));
$date = new DateTime($selectedtime, new DateTimeZone($timezone));
$date->setTimezone(new DateTimeZone('GMT'));
$convertedtime = strtotime($date->format('Y-m-d H:i'));
return $convertedtime;
}