Time Sync between 2 servers with PHP

kumschick

Hi, I would like to time sync to servers using php!
I want to be sure that the server running the current X php script
is NOT using a fake date and time!

I dont know at all how to do it!

Let we say that we have server Z that has 100% the right date and time and is located on GMT +1 (Paris, Berlin, etc...)!

Now I have to know the actule servers GMT, date and time and compare them!

But how may a get the information from server Z to server Y in vars so that I
can use them with a IF() formula ???

I can't give any code, since I dont even know to to get the infos...

My idear was to use an include("http://serverZ.com/timesync.php");
but the problem is that I can't use the vars and if i put an ECHO"$script";
I will see the echo on the serverY and won't be able to hide them and work with them...! Well it is possible, but I personaly dont find this idear for an good one...

Maybe an other php_function is better...

Thx for any help 😃

Installer

What variable do you mean when you say "I can't use the vars"?

kubis

kumschick wrote:
Hi, I would like to time sync to servers using php!
I want to be sure that the server running the current X php script
is NOT using a fake date and time!

why in the hell you want to use PHP for time syncing??
use npt client, its much more reliable and IMHO cleaner solution

MarkR

Using PHP is not the RIGHT way to do it. Use NTP daemons to sync the time on the servers.

Better still, sync them both to an external trusted time source.

Mark

kumschick

Well what I want to do is more complicated then that!

I have a Sever X (Main Server) and a Server Z (Client (Server)). I have an application based on PHP (only for Windows Servers) with a licence system!

But this license systems is using the date and time of Windows! If tomorrow the licence exp. the user just needs to change the date and the application runs again without any problem!

Now to be sure that the user (costumer) is not changing the clock to continue using the application I want to add a wait to check the time of our Server and compare it with the costumers server!

How could I do this ??? 😃

_theworks

i dont believe you are descibing your situation accuratly enough for anyone to be able to help you.
Dont use php to try and syncronise servers.. its not going to work.

MarkR

Remember that trying to prevent your application being run by unauthorised users is futile.

If they have no valid licence, they cannot expect support. If they want to set their clock wrong and inconvenience thenselves, while simultaneously running an unlicenced application, it's their own silly fault when it all goes wrong.

So don't even bother.

Mark

kumschick

dont bother... lol !!!

yes and no, i do care little