Clash Royale CLAN TAG#URR8PPP

date_default_timezone_set() is being applied the same for everyone

I want to set the timezone to the visitor's timezone.

I am doing it like this way:

$ip = $_REQUEST['REMOTE_ADDR']; // the IP address to query
$query = @unserialize(file_get_contents('http://ip-api.com/php/'.$ip));
if($query && $query['status'] == 'success')
date_default_timezone_set($query['timezone']);
else
echo 'Unable to get location';



However, when another visitor visits the site he will have the timezone of the previous visitor ...

Why doesn't date_default_timezone clears? Is there's any solution to that?

date_default_timezone

Any help would be appreciated.

Thanks!

2 Answers
2

$_REQUEST is used to get data from GET/POST request. It should be $_SERVER['REMOTE_ADDR']

$_REQUEST

$_SERVER['REMOTE_ADDR']

Code

$ip = $_SERVER['REMOTE_ADDR']; // the IP address to query
$query = @unserialize(file_get_contents('http://ip-api.com/php/'.$ip));
if($query && $query['status'] == 'success')
date_default_timezone_set($query['timezone']);
echo 'timezone set to '.$query['timezone'];
else
echo 'Unable to get location';



Output

timezone set to Asia/Kolkata


Explanation:

$_REQUEST['REMOTE_ADDR'] have no value, mean $ip is empty. If you query http://ip-api.com/php/ without ip, it'll get request ip by default and shows that request data not ip data. That's why you're getting same timezone for every visitors.

$_REQUEST['REMOTE_ADDR']

$ip

http://ip-api.com/php/

Bonus

You can get visitors timezone without using any API. $_SERVER['COOKIE'] have timezone of visitors.

$_SERVER['COOKIE']

timezone

snippet

parse_str($_SERVER['HTTP_COOKIE'], $cookie);
if(isset($cookie['timezone']))
date_default_timezone_set($cookie['timezone']);

else
echo 'Unable to get location'; //or do something!



HTTP_COOKIE

print_r($_SERVER);

Happy Coding

Unfortunately, the answer of "Smartpal" is very good but I still have the same problem with it.

So I've heard that date_default_timezone_set() is outdated and old - That's why I've switched to the DateTime() class.

date_default_timezone_set()

DateTime()

and now instead of using date('G') I can do it like that:

date('G')

$ip = $_SERVER['REMOTE_ADDR']; // the IP address to query
$query = @unserialize(file_get_contents('http://ip-api.com/php/'.$ip));
$tz = $query['timezone'];
$timestamp = time();
$dt = new DateTime("now", new DateTimeZone($tz));
$dt->setTimestamp($timestamp);
echo $dt->format('G');


This worked fine for me.

Source of the answer: https://stackoverflow.com/a/20289096/8524395

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