session handling inside functions

[Anon]

I have a php file test.php.In this i am having 3 functions.The first function is called by default when test.php is executed.Here i am storing the url with query string in a session variable.After submitting the details the same test.php is called and the second function is called.Here also i want to store the current url with query string in a session variable.My doubt is where to start the session.Do i need to start the session inside each function or only once outside functions.In case if i start the session outside the function,is it possible to get the all registered session variables inside all the functions.

Thanks in advance.

srini

[littleelmo]

It can't hurt to have session_start() at the beginning of all the funcitons.
Also, if you are calling functions and wish to use the session variables inside the functions, I believe you will have to pass the session variables in as parameters in order to use them.