timezone conversion php

timezone-conversion-test.php

<?php 

$phTz = new DateTimeZone("Asia/Manila");
$gmt0Time = new DateTimeZone("GMT0");

$date = new DateTime();

echo "default: ";
echo $date->format('r');
echo "<br />";
echo "manila: ";
echo $date->setTimezone($phTz)->format('r');
echo "<br />";
echo "UTC: ";
echo $date->setTimezone($gmt0Time)->format('r');

echo "<br />";
echo "------------------------------";

echo "<br />";

date_default_timezone_set("GMT0");
$inbound_time = "2007-01-25 14:00:00";
$inbound_time_obj = new DateTime($inbound_time);

$data = array(
  array(
    "message_id" => 9123,
    "inbound_time" => $inbound_time_obj->format("r"),
    "inbound_time_format" => $inbound_time_obj->format("Y-m-d H:i:s"),
    "inbound_time_usertz" => $inbound_time_obj->setTimezone(new DateTimeZone("Asia/Manila"))->format("r"),
    "inbound_time_usertz_format" => $inbound_time_obj->setTimezone(new DateTimeZone("Asia/Manila"))->format("Y-m-d H:i:s"),
    "message" => "hi, how are you?",
    "author_id" => 23,
    "author_name" => "Christian",
    "recipient_id" => 75,
    "recipient_name" => "Jehtro",
  )
);

echo json_encode($data);

?>