Store the time zone selection

- [Voiceover] Now that we have a good select option…on our form, we're ready to write the code…to process the form value.…In real life, you'd probably wanna store this value…with the user's data in a database…so that it can stick around.…But rather than go to the processes setting up a database…for this small project, we're gonna use something simpler.…We're gonna use PHP's session to store the value.…That allow us to be able to set it and retrieve it.…And to simulate what it would be like…if we have a full database.…The way that we use sessions in PHP is…we first have to tell PHP to start the sessions.…

And we do that with session_start.…That function will tell PHP…to make sessions available to us.…After that, we can call the sessions super global…to access the sessions.…Dollar sign, underscore, all capital Session…and then in square brackets, the string that identifies…the value that we either want to set or retrieve.…It's called the session key.…I'm gonna be using user_tz_ident…to store the user's timezone identifier.…