how to get the correct time with php - php

i am trying to get the correct time with php
not the one that the user's computer gives is there a function that gives the correct "GMT" time as an example .

PHP gets the server date, not the user computer date.
If you need to get a different date timezone then you need set the timezone to your desired.
See: http://php.net/manual/en/function.date.php
like:
$tz = 'Europe/London';
$timestamp = time();
$dt = new DateTime("now", new DateTimeZone($tz)); //first argument "must" be a string
$dt->setTimestamp($timestamp); //adjust the object to correct timestamp
echo $dt->format('d.m.Y, H:i:s');

If you just want GMT time, you can use gmdate instead of date. For example,
echo date('Y-m-d H:i:s') . "\n";
echo gmdate('Y-m-d H:i:s') . "\n";
Output (for a server in Europe)
2019-02-04 03:34:05
2019-02-04 02:34:05
Demo on 3v4l.org

You will be getting the server time only, not the computer time
$now = new DateTime(null, new DateTimeZone('America/New_York')); //timezone format
echo $now->format("Y-m-d\TH:i:sO"); // Server time

Related

how to make date formating consistent in all envirnment

I am using PHP 7.3.
I am trying to format a strtotime() format to ISO format, but the result is taking timezone of system, causing inconsistent result in different environment.
$date = date('Y-m-d\TH:i:s'.substr((string)microtime(), 1, 4).'\Z',1585526400);
In phpfiddle, the output is 2020-03-30T00:00:00.475Z, in local system 2020-03-30T05:30:00.415Z and in server it is 2020-03-30T05:00:00.415Z.
if I am changing the code to
$date = date(DATE_ISO8601, 1585526400);
phpfiddle output is 2020-03-30T00:00:00+0000, local 2020-03-30T05:30:00+0530 and in server 2020-03-30T05:00:00+0500
How I can make it consistent?
You can set timezone explicitly. Sample snippet:
$date = new DateTime();
$date->setTimezone(new DateTimeZone('UTC'));
$date->setTimestamp(1585526400);
echo $date->format('Y-m-d\TH:i:s');
You can do this by setting the Timezone at the time of getting date and time as:
$dateTime = new DateTime('now', new DateTimeZone('UTC'));
$dateTime = $dateTime->format("y-m-d H:i:s");
echo $dateTime;

how to get current time of a UAE in PHP

I am using yii framework
I am using below to code to get time
<?php echo date('Y/m/d H:i:s') ?>
how can i current time of UAE?
Try this:
$tz = 'Asia/Dubai'; // your required location time zone.
$timestamp = time();
$dt = new DateTime("now", new DateTimeZone($tz)); //first argument "must" be a string
$dt->setTimestamp($timestamp); //adjust the object to correct timestamp
echo $dt->format('Y/m/d H:i:s');
Use date_default_timezone_set() :
date_default_timezone_set('Asia/Dubai');
echo "The time is " . date('Y/m/d H:i:s');

strange timezone issue EDT/EST

I have checked my mysql system timezone with SELECT ##system_time_zone; and its return EDT in production server. Now I want to generate same timezone's (i.e EDT) current timestamp which is not working. This is what i have tried so far is
date_default_timezone_set('EST');
$ts = strtotime('now');
echo date('Y-m-d H:i:s',$ts);
and
$date = new DateTime(null, new DateTimeZone('EST'));
$ts = $date->getTimestamp();
echo date('Y-m-d H:i:s',$ts);
its output is 2015-09-07 05:38:43 but my mysql date (timestamp) is 2015-09-07 06:39:53 so its not same. (tested by inserting same time)
So how can I get current timestamp based on mysql's system time zone (EDT/EST)?? any help from proessional appricated
The current values of the global and client-specific time zones can be retrieved like this:
mysql> SELECT ##global.time_zone, ##session.time_zone;
And try to use this code to set time zone and Location of time zone
<?php
$date = date_create('2000-01-01', timezone_open('Pacific/Nauru'));
echo date_format($date, 'Y-m-d H:i:sP') . "\n";
date_timezone_set($date, timezone_open('Pacific/Chatham'));
echo date_format($date, 'Y-m-d H:i:sP') . "\n";
?
Note second php code is just an example.
I hope I helped you

how to convert my TIMESTAMP to UTC timestamp in magento

i found many articals on this but none of give proper soluation
my current system timezone is = 'asia/Kolkata'
my current magento timezone is 'asia/shanghai'
this give me de correct UTC time here system time is '2013-06-26 15:34:00'
$timezone = date_default_timezone_get();
date_default_timezone_set($timezone);
$now = Mage::getModel('core/date')->timestamp(time());
$current_date= date('Y-m-d H:i:s');
so here $current_date = '2013-06-26 18:04:30'
but i have another mytimestamp..... ex :- $time = '2013-06-26 15:34:00';
$scheduletime = '2013-06-26 15:19:00';
$dateTimestamp = Mage::getModel('core/date')->timestamp(strtotime($scheduletime));
$schedule_time = date('Y-m-d H:i:s',strtotime($scheduletime));
so here $schedule_time = '2013-06-26 23:34:00'
so actually what i want is to get difference between this two time and it should be : 0
Try
Mage::getSingleton('core/date')->gmtDate();
Note: UTC and GMT are equal.
Use strtotime to generate a timestamp from the given string (interpreted as local time) and use gmdate to get it as a formatted UTC date back.
For example
As requested, here’s a simple example:
echo gmdate('d.m.Y H:i', strtotime('2012-06-28 23:55'));
or you can also use local setting with store like below
Mage::app()->getLocale()->storeDate(
$this->getStore(),
Varien_Date::toTimestamp($this->getCreatedAt()),
true
);
where $this->getCreatedAt() your Database date.

php convert datetime to UTC

I am in need of an easy way to convert a date time stamp to UTC (from whatever timezone the server is in) HOPEFULLY without using any libraries.
Use strtotime to generate a timestamp from the given string (interpreted as local time) and use gmdate to get it as a formatted UTC date back.
Example
As requested, here’s a simple example:
echo gmdate('d.m.Y H:i', strtotime('2012-06-28 23:55'));
Using DateTime:
$given = new DateTime("2014-12-12 14:18:00");
echo $given->format("Y-m-d H:i:s e") . "\n"; // 2014-12-12 14:18:00 Asia/Bangkok
$given->setTimezone(new DateTimeZone("UTC"));
echo $given->format("Y-m-d H:i:s e") . "\n"; // 2014-12-12 07:18:00 UTC
Try the getTimezone and setTimezone, see the example
(But this does use a Class)
UPDATE:
Without any classes you could try something like this:
$the_date = strtotime("2010-01-19 00:00:00");
echo(date_default_timezone_get() . "<br />");
echo(date("Y-d-mTG:i:sz",$the_date) . "<br />");
echo(date_default_timezone_set("UTC") . "<br />");
echo(date("Y-d-mTG:i:sz", $the_date) . "<br />");
NOTE: You might need to set the timezone back to the original as well
Do this way:
gmdate('Y-m-d H:i:s', $timestamp)
or simply
gmdate('Y-m-d H:i:s')
to get "NOW" in UTC.
Check the reference:
http://www.php.net/manual/en/function.gmdate.php
If you have a date in this format YYYY-MM-HH dd:mm:ss,
you can actually trick php by adding a UTC at the end of your "datetime string" and use strtotime to convert it.
date_default_timezone_set('Europe/Stockholm');
print date('Y-m-d H:i:s',strtotime("2009-01-01 12:00"." UTC"))."\n";
print date('Y-m-d H:i:s',strtotime("2009-06-01 12:00"." UTC"))."\n";
This will print this:
2009-01-01 13:00:00
2009-06-01 14:00:00
And as you can see it takes care of the daylight savings time problem as well.
A little strange way to solve it.... :)
Convert local time zone string to UTC string.
e.g. New Zealand Time Zone
$datetime = "2016-02-01 00:00:01";
$given = new DateTime($datetime, new DateTimeZone("Pacific/Auckland"));
$given->setTimezone(new DateTimeZone("UTC"));
$output = $given->format("Y-m-d H:i:s");
echo ($output);
NZDT: UTC+13:00
if $datetime = "2016-02-01 00:00:01", $output = "2016-01-31 11:00:01";
if $datetime = "2016-02-29 23:59:59", $output = "2016-02-29 10:59:59";
NZST: UTC+12:00
if $datetime = "2016-05-01 00:00:01", $output = "2016-04-30 12:00:01";
if $datetime = "2016-05-31 23:59:59", $output = "2016-05-31 11:59:59";
https://en.wikipedia.org/wiki/Time_in_New_Zealand
If you don't mind using PHP's DateTime class, which has been available since PHP 5.2.0, then there are several scenarios that might fit your situation:
If you have a $givenDt DateTime object that you want to convert to UTC then this will convert it to UTC:
$givenDt->setTimezone(new DateTimeZone('UTC'));
If you need the original $givenDt later, you might alternatively want to clone the given DateTime object before conversion of the cloned object:
$utcDt = clone $givenDt;
$utcDt->setTimezone(new DateTimeZone('UTC'));
If you only have a datetime string, e.g. $givenStr = '2018-12-17 10:47:12', then you first create a datetime object, and then convert it. Note this assumes that $givenStr is in PHP's configured timezone.
$utcDt = (new DateTime($givenStr))->setTimezone(new DateTimeZone('UTC'));
If the given datetime string is in some timezone different from the one in your PHP configuration, then create the datetime object by supplying the correct timezone (see the list of timezones PHP supports). In this example we assume the local timezone in Amsterdam:
$givenDt = new DateTime($givenStr, new DateTimeZone('Europe/Amsterdam'));
$givenDt->setTimezone(new DateTimeZone('UTC'));
As strtotime requires specific input format, DateTime::createFromFormat could be used (php 5.3+ is required)
// set timezone to user timezone
date_default_timezone_set($str_user_timezone);
// create date object using any given format
$date = DateTime::createFromFormat($str_user_dateformat, $str_user_datetime);
// convert given datetime to safe format for strtotime
$str_user_datetime = $date->format('Y-m-d H:i:s');
// convert to UTC
$str_UTC_datetime = gmdate($str_server_dateformat, strtotime($str_user_datetime));
// return timezone to server default
date_default_timezone_set($str_server_timezone);
I sometime use this method:
// It is not importnat what timezone your system is set to.
// Get the UTC offset in seconds:
$offset = date("Z");
// Then subtract if from your original timestamp:
$utc_time = date("Y-m-d H:i:s", strtotime($original_time." -".$offset." Seconds"));
Works all MOST of the time.
http://php.net/manual/en/function.strtotime.php or if you need to not use a string but time components instead, then http://us.php.net/manual/en/function.mktime.php
With PHP 5 or superior, you may use datetime::format function (see documentation http://us.php.net/manual/en/datetime.format.php)
echo strftime( '%e %B %Y' ,
date_create_from_format('Y-d-m G:i:s', '2012-04-05 11:55:21')->format('U')
); // 4 May 2012
try
echo date('F d Y', strtotime('2010-01-19 00:00:00'));
will output:
January 19 2010
you should change format time to see other output
General purpose normalisation function to format any timestamp from any timezone to other.
Very useful for storing datetimestamps of users from different timezones in a relational database. For database comparisons store timestamp as UTC and use with gmdate('Y-m-d H:i:s')
/**
* Convert Datetime from any given olsonzone to other.
* #return datetime in user specified format
*/
function datetimeconv($datetime, $from, $to)
{
try {
if ($from['localeFormat'] != 'Y-m-d H:i:s') {
$datetime = DateTime::createFromFormat($from['localeFormat'], $datetime)->format('Y-m-d H:i:s');
}
$datetime = new DateTime($datetime, new DateTimeZone($from['olsonZone']));
$datetime->setTimeZone(new DateTimeZone($to['olsonZone']));
return $datetime->format($to['localeFormat']);
} catch (\Exception $e) {
return null;
}
}
Usage:
$from = ['localeFormat' => "d/m/Y H:i A", 'olsonZone' => 'Asia/Calcutta'];
$to = ['localeFormat' => "Y-m-d H:i:s", 'olsonZone' => 'UTC'];
datetimeconv("14/05/1986 10:45 PM", $from, $to); // returns "1986-05-14 17:15:00"
As an improvement on Phill Pafford's answer (I did not understand his 'Y-d-mTG:i:sz' and he suggested to revert timezone).
So I propose this (I complicated by changing the HMTL format in plain/text...):
<?php
header('content-type: text/plain;');
$my_timestamp = strtotime("2010-01-19 00:00:00");
// stores timezone
$my_timezone = date_default_timezone_get();
echo date(DATE_ATOM, $my_timestamp)."\t ($my_timezone date)\n";
// changes timezone
date_default_timezone_set("UTC");
echo date("Y-m-d\TH:i:s\Z", $my_timestamp)."\t\t (ISO8601 UTC date)\n";
echo date("Y-m-d H:i:s", $my_timestamp)."\t\t (your UTC date)\n";
// reverts change
date_default_timezone_set($my_timezone);
echo date(DATE_ATOM, $my_timestamp)."\t ($my_timezone date is back)\n";
?>
alternatively you can try this:
<?php echo (new DateTime("now", new DateTimeZone('Asia/Singapore')))->format("Y-m-d H:i:s e"); ?>
this will output :
2017-10-25 17:13:20 Asia/Singapore
you can use this inside the value attribute of a text input box if you only want to display a read-only date.
remove the 'e' if you do not wish to show your region/country.
Follow these steps to get UTC time of any timezone set in user's local system (This will be required for web applications to save different timezones to UTC):
Javascript (client-side):
var dateVar = new Date();
var offset = dateVar.getTimezoneOffset();
//getTimezoneOffset - returns the timezone difference between UTC and Local Time
document.cookie = "offset="+offset;
Php (server-side):
public function convert_utc_time($date)
{
$time_difference = isset($_COOKIE['offset'])?$_COOKIE['offset']:'';
if($time_difference != ''){
$time = strtotime($date);
$time = $time + ($time_difference*60); //minutes * 60 seconds
$date = date("Y-m-d H:i:s", $time);
} //on failure of js, default timezone is set as UTC below
return $date;
}
..
..
//in my function
$timezone = 'UTC';
$date = $this->convert_utc_time($post_date); //$post_date('Y-m-d H:i:s')
echo strtotime($date. ' '. $timezone)

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