Answers for "php display date and time in ist timezone"

default time zone india php

date_default_timezone_set('Asia/Kolkata');
$timestamp = date("Y-m-d H:i:s");

how to get the list of available timezones in php

//To Get the list of timezones available in php
//use the static function listIdentifiers() on DateTimeZone class
$list = DateTimeZone::listIdentifiers();
print_r($list)