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Tuesday, November 29, 2022

How to convert one time zone to anothor time zone





Some application required one time zone to convert another time zone.

PHP provide some readymade timezone conversion classes but it a very complecated. so we have try to define this function simple way.

You can createe a simple class and write one function into the class. then you able to use this function everywere.

class convertTimezone

{

function convert_timezone() // Constructor of the class

{

}

function converToTime($conv_fr_zon=0,$conv_fr_time="",$conv_to_zon=0)

{

//echo $conv_fr_zon;

$cd = strtotime($conv_fr_time);

$gmdate = date('Y-m-d H:i:s', mktime(date('H',$cd)-$conv_fr_zon,date('i',$cd),date('s',$cd),date('m',$cd),date('d',$cd),date('Y',$cd)));

//echo $gmdate";

$gm_timestamp = strtotime($gmdate);

$finaldate = date('Y-m-d H:i:s', mktime(date('H',$gm_timestamp )+$conv_to_zon,date('i',$gm_timestamp ),date('s',$gm_timestamp ),date('m',$gm_timestamp ),date('d',$gm_timestamp ),date('Y',$gm_timestamp )));

return $finaldate;

}

}

Example For Use

$c = new convertTimezone();

$resultTime = $c->converToTime(5.30, “2011-05-09 11:00:00”, -13);

$resultTime = $c->converToTime(-4, “2011-05-09 11:00:00”, 10);

The first one converts 5th May, 2011, 11 am from the timezone GMT+0530hrs to GMT-1300hrs

The second one coverts 5th May,2011 11 am from the timezone GMT-0400hrs to GMT1000 hrs

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