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run code in 200+ php & hhvm versions
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<?php function convertUnixTimeBetweenTimezones($vUnixTime,$vOriginalTimezone,$vDesiredTimezone) { if ($vOriginalTimezone == $vDesiredTimezone) { // no timezone shifting required return $vUnixTime; } // set default to desired timezone $vCurrentTimezone = date_default_timezone_get(); date_default_timezone_set($vDesiredTimezone); $oBaseTimeZone = new DateTimeZone($vOriginalTimezone); // user time zone $oCurrentTimeZone = new DateTimeZone($vDesiredTimezone); $vIsoTime = date("Y-m-d H:i:s",$vUnixTime); $oBaseTime = new DateTime($vIsoTime,$oBaseTimeZone); $oBaseTime->setTimezone($oCurrentTimeZone); $vTimeStamp = $oBaseTime->getTimestamp(); date_default_timezone_set($vCurrentTimezone); return $vTimeStamp; } echo convertUnixTimeBetweenTimezones(1414710000,"EST","UTC"); ?>
based on 6E0p9
Output for 5.5.10 - 7.2.6
1414728000
Output for 5.3.0 - 5.5.9
1414724400
Output for 5.2.0 - 5.2.17
Fatal error: Call to undefined method DateTime::getTimestamp() in /in/tj2io on line 23
Process exited with code 255.
Output for 5.1.0 - 5.1.6
Fatal error: Class 'DateTimeZone' not found in /in/tj2io on line 15
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Fatal error: Call to undefined function date_default_timezone_get() in /in/tj2io on line 12
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: date_default_timezone_get() in /in/tj2io on line 12
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: date_default_timezone_get() in /in/tj2io on line 12
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: date_default_timezone_get() in /in/tj2io on line 12