session_start() questions.

[lokem]

Hi folks,

I'd like some input on where and when to call the session_start() function. Normally, it's called b4 accessing session variables.

My question is this: at the top of a PHP page, I'll call a class to check if a session has been created or not (Sess::checkLogin). In this function, it'll call the session_start() function. Would I need to call the same function again in any other page or class function I have following that?

Thanks in advance.

[xDeadxBeatx]

You wouldn't have to call session_start() anywhere else on that page if you call the class. Although you might want to use session_id() to identify your session and make sure your not starting 2 different sessions with different session id's

[lokem]

Originally posted by xDeadxBeatx
You wouldn't have to call session_start() anywhere else on that page if you call the class. Although you might want to use session_id() to identify your session and make sure your not starting 2 different sessions with different session id's

Thanks for the info. Isn't session_id() used to obtain the current session ID? What should I use to compare the value of session_id() to?

[xDeadxBeatx]

Well im not 100% how to use session_id() and i dont know how to compare it. But the way i used it was $id = "456"; session_id($id); sumthing like that.

[freebie]

rather than giving you the answer, I'll give you the code to figure out what you're looking for so that you'll know how to figure out this type of question in the future.

if(is_null(session_id())){
echo "null";
}elseif(session_id()==""){
echo "empty string";
}else{
echo session_id();
}

-- of course don't call session_start on this test page otherwise you will get a session id.

-HTH

[lokem]

Thanks for the code. I'm getting the hang of this 🙂