can any one please help me how to convert timestamp to IST

jtime = 2014-07-23 02:41:05 to Date H:i:s am/pm formate

Use DateTime and DateTimeZone

// i'm assuming this is server time?
$jtime = "2014-07-23 02:41:05";

// initialize a DateTime object
$time = new DateTime($jtime);

// initialize a DateTimeZone object to get the new timezoe
$ist_zone = new DateTimeZone('Asia/Kolkata');

// set timezone

// if you're going to use am/pm, use "h" instead of "H" for 12-hour time
echo $time->format('Y-m-d h:i:s a');  // returns 2014-07-23 12:11:05 pm