PHP Session wont Echo

[m1th]

Hi

 

I need to make a session if the URL paremeter has source=aw in the string.

 

I have this code

 

if ($_REQUEST["source"]=="aw"){

$_SESSION['affon']=1;

}

 

Then on any other PHP page or the same page on the same server folder I try echoing the file with no luck.

 

echo $_SESSION["affon"];

[the182guy]

You need to initialise the session at the start of any script where you want to read or write to the sesssion. Put this at the top:

 

session_start();

 

Why have you got () after the echo? Should just be

 

echo $_SESSION["affon"];

[m1th]

The script already has includes in the header which have session_start(); inside them .. there are a lot of files around with session start so there would be no conflict??

[Drummin]

I think your () are killing it.  Try

if ($_REQUEST["source"]=="aw"){ $_SESSION['affon']=1; }
echo $_SESSION["affon"];

[m1th]

Yes, I know. That is already working and I copied and pasted something else, that is why the (); came in..

 

 

 

[Drummin]

Can you hard code a session value and pass that from page to page?  If not it's a session_start(); issue.

[spiderwell]

if you get an undefined index error when echoing, its session_start()

[m1th]

I can have this:

 

/site/john.php

 

Source:

 

<?php
session_start();
if ($_REQUEST["source"]=="aw"){
	$_SESSION['affon']=1;	
}
?>

 

If I try now making a file on the same server. Example

 

/site/sub/sarah.php

 

Source:

 

<?php
echo $_SESSION["affon"];
?>

 

The file won't work and won't register that a session is on the server. I thought PHP has it's own Memory??

[Drummin]

What happens if you add this to your pages

session_start();
if ($_REQUEST['source']=="aw"){
	$_SESSION['affon']=1;	
}
else{
$_SESSION['affon']=0;	
}
echo $_SESSION['affon'];

[the182guy]

/site/sub/sarah.php

 

Source:

 

<?php
echo $_SESSION["affon"];
?>

 

The file won't work and won't register that a session is on the server. I thought PHP has it's own Memory??

 

As I said above, you need session_start() at the top of all scripts, that's why it isn't working.

[m1th]

So I need the code EVEN though I have already started the session?

 

ASP (Classic) all you do is

 

<%

session("aff_code") = request("source")

%>

 

And you can use that on the IIS server untill you run session.abandon();

[voip03]

Have you registered the session?

[m1th]

What do you mean registered the session?

 

I am just saying is there no other way to have session calls through the server on other PHP files without using the session start at the top....

 

That is all I wanted to know. I just want to know why PHP you need to declare a session_start(); every file.

 

I used to code PHP a long time ago; I remember the nasty ?PHPSESSIONID and other URLs which I definatley do not want users or search engines to see on my app

[voip03]

PHP session solves this problem by allowing you to store user information on the server for later use (i.e. username, shopping cart items, etc). However, this session information is temporary and is usually deleted very quickly after the user has left the website that uses sessions.

 

It is important to ponder if the sessions' temporary storage is applicable to your website. If you require a more permanent storage you will need to find another solution, like a MySQL database.

 

Sessions work by creating a unique identification(UID) number for each visitor and storing variables based on this ID. This helps to prevent two users' data from getting confused with one another when visiting the same webpage.

 

Note:If you are not experienced with session programming it is not recommended that you use sessions on a website that requires high-security, as there are security holes that take some advanced techniques to plug.

 

Starting a PHP Session

Before you can begin storing user information in your PHP session, you must first start the session. When you start a session, it must be at the very beginning of your code, before any HTML or text is sent.

http://php.net/manual/en/function.session-start.php

http://www.w3schools.com/php/php_sessions.asp

Ps. Learn to google it; you will get more more answer.

[m1th]

Thanks guys!

[voip03]

please mark as solved. the topic solved button can be found at the bottom left of the page

Thank you

[m1th]

Yes, I was looking for the this. you need to get the Invision Power Board quick reply mod too!

 

Thanks! hope to return fav in css/xhtml

 

EDIT - just seen quick reply mod.