CODEWITHSUNDEEP
phpdatetimezone
user1222955
user1222955

Reputation: 3

Timezone Datetime with offset in php , getting it easy

I have timestamp from specific timezone (Jamaica) and i want to get GMT timestamp of it. Is there more elegant solution than this one : 

$start = DateTime::createFromFormat('U', 1330560000);
        $start->setTimezone(new DateTimeZone('America/Jamaica'));
        $start->format('Y-m-d H:i:s');//2012-02-29 19:00:00 NO NO NO

        $tz = new DateTimeZone( 'America/Jamaica' );
        $transition = $tz->getTransitions($start->getTimestamp(),$start->getTimestamp());


        $offset = $transition[0]['offset'];


        $start = DateTime::createFromFormat('U', $params['start'] - 2*$transition[0]['offset']);
        $start->setTimezone(new DateTimeZone('America/Jamaica'));
        $start->format('Y-m-d H:i:s'); // "2012-03-01 05:00:00" YESSSS!!!

Upvotes: 0

Views: 943

Answers (2)

Teneff
Teneff

Reputation: 32158

Unix time, or POSIX time, is a system for describing instances in time, defined as the number of seconds that have elapsed since midnight Coordinated Universal Time (UTC), 1 January 1970.

source Wikipedia

The idea of the UNIX timestamp is that it is always in UTC (everywhere in the world xD ). If it does not represents the time in UTC it's not a UNIX timestamp anymore

Upvotes: 1

Ludo237
Ludo237

Reputation: 1717

This is a part of my class that create a well-formatted time stamp as I wrote in the comment of the function, it's very easy to use just pass the string of the date, time zone and the identifier.

Hope it helps you

/**
* Default timestamp format for formatted_time
* @var  string
*/
public static $timestamp_format = 'Y-m-d H:i:s';
/**
* Returns a date/time string with the specified timestamp format
* @example $time = Date::formatted_time('5 minutes ago');
* @link    http://www.php.net/manual/datetime.construct
* @param   string  $datetime_str       datetime string
* @param   string  $timestamp_format   timestamp format
* @param   string  $timezone           timezone identifier
* @return  string
*/
public static function formatted_time($datetime_str = 'now', $timestamp_format = NULL, $timezone = NULL){
            $timestamp_format = ($timestamp_format == NULL) ? Date::$timestamp_format : $timestamp_format;
            $timezone         = ($timezone === NULL) ? Date::$timezone : $timezone;
            $tz   = new DateTimeZone($timezone ? $timezone : date_default_timezone_get());
            $time = new DateTime($datetime_str, $tz);
            if ($time->getTimeZone()->getName() !== $tz->getName()){
                $time->setTimeZone($tz);
            }
            return $time->format($timestamp_format);
        }

Upvotes: 0

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