Can I define a session variable before session_start()?

[suckerpunch]

Do I have to write session_start() before I define a new session variable? 

[Love2c0de]

Yes. It must be at the very top of your code also.

 

 

<?php
session_start();
 
//now you can set session variables anywhere in the script.
?>

 

Kind regards,

 

L2c.

[davidannis]

I believe that you can put the session_start below the first line AS LONG AS you have no output to the browser before the session_start. If you have output to the browser then the header has already been sent and you get an error to that effect so it is usually good practice to put it right at the top.

[suckerpunch]

Thank you very much.