Pass session ID to multiple PHP scripts within on HTML page

Question

I have a single HTML page that uses a carousel style log in system. Each step in the sign up works off of a different php script. There are 3 forms on the page that appear as the user progresses through the sign up. As they progress I need to keep their user id from the first step in a variable in order to update parts of their account later on.

The forms are executed via ajax and the first php script calls

session_start();

And then sets the session variable

$_SESSION['user_id']=$account_id;

As I progress through the form I put this at the top to check if the session variable was passing through

if (empty ($_SESSION['user_id'])) {
$message = 'Cant find the session id';}

And it is not. I don't have session_start() at the top of the other php scripts.

Am I misunderstanding how to pass this variable?

I don't have session_start() at the top of the other php scripts. You answered it yourself, if you don't have it initiated how do you expect it to work? By calling session_start() at the top of your script you're allowing it to read the session that has been previously saved from another step of your code. — Prix
– Prix, Commented Apr 20, 2014 at 5:06
You have to write session_start() in the next page also, so that it will work — prava
– prava, Commented Apr 20, 2014 at 5:06

Tyler Carter · Accepted Answer · 2014-04-20 05:16:58Z

1

session_start(); needs to be called at the beginning of each page load in order to make $_SESSION available.

Don't worry, it won't reset the session. In the simplest terms, session_start() just tells PHP that you are expecting a session to exist, and it needs to run its code to give you access to it.

answered Apr 20, 2014 at 5:16

Tyler Carter

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1 Comment

Alex Over a year ago

Thank you for the clarification on session_start() not resetting the session

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