unstable session?

[voitek]

Hi everyone.

I´m going crazy. I have been working on this sort of shopping site. All it´s supposed to do is let the user choose some products, put them in a basket and send that basket´s content to me. Should be easy. I am new to php but i had help from a guy whos fairly good at it (seems to me). He couldn´t find the problem.

I´m ataching all the files needed for my script to (not)work. I live in spain so the variables are in spanish. I hope it´s straightforward enough for U people to undarstand it anyhow. If anyone has any ideas i would be greatly thankfull.

Oh, the thing is it works fine sometimes but then it throws an error on line 15 of add.php .

I´m lost.

Cheers.

[vaaaska]

What is the error message?

[voitek]

Fatal error: Call to a member function on a non-object in /home/httpd/vhosts/softlares.com/httpdocs/boutique/add.php on line 15

any ideas?

[vaaaska]

Yeah, you class hasn't been called...or is not being found. Is line 15 right? Shouldn't it be more like...

$_SESSION["cesta"] = $init->add($_POST["id"],$_POST["cantidad"]);

'$init' being where you created your new class $init = new NameOfClass.

I have to admit that I don't know the usage of classes inside and out...I could be very wrong.

[voitek]

I will try it out. Thanks for Your help.

[voitek]

There is one more thing i don´t understand. It works perfectly on my local apache...

[vaaaska]

Somebody else might have a better explanation...but I'll just say that I don't always trust the results I get from things when I test locally (if that's what you are doing).

It could also be as simple as your remote site is missing a file too...the one that holds the class in question perhaps.

[kubis]

First call the require_once('classfile.php'); whre your class is defined, THEN start session using session_start();

dont try to use session_start(); before loading the class definitions and DONT even try to set php.ini setting session.auto_start to On.

If you try to use session_start() before loading your class defintion, it will deserialize into Standard Class (stdClass) only with attributes, and without any method.

[voitek]

Dobry Dzen kubis.

Class definition is stored in basket.php. Session is started in that same file at the end, after class definition.

Strange thing is it´s working fine now. Sometimes it works, sometimes it don´t.

When i debug the code using phpEd it shows my cesta ("basket in spanish") object (it extends my class) as well defined but null. Then it works (sometimes). It must be something with sessoin handling but i have no clue what´s the problem. U can see it work (or not 🙂 ) here:

softlares.com/boutique/boutique.php

[kubis]

Originally posted by voitek
Dobry Dzen kubis.
Strange thing is it´s working fine now. Sometimes it works, sometimes it don´t.
softlares.com/boutique/boutique.php

Dobry den voitek,
try to look into php.ini (or check phpinfo() function) whether the session.auto_start is disabled. this may be the problem.

[voitek]

session.auto_start() is set to off.

That´s how it sholud be, right?
U can check it here:

http://www.softlares.com/butique/info.php

[kubis]

Well i dont see any problem in the php settings; maybe if it does work on your local apache, try to compare both phpinfo();

Try to clean all domain/session cookies before you test it on the site; maybe there is an old session stored which doesnt contain correct data (i.e. serialized structures of older version of your class)

[voitek]

I don´t know. I´m lost. Can i clean the session from my script maybe before i start a new one?

Worst thing is it works most of the time. Have you had a look at the files i attached. Maybe you´d see something wrong with the coding?

I´m gonna live it as is for now. Finish laying out the page, becouse i´m not progressing with this.

It would be great if you could have a look at the files (check the first post).

Anyhow, thank you for your time.
My mom says Prague is the most beautifull city she´s seen. I´ve never beer. 🙂

Cheers.

[kubis]

change add.php line 50 from:

$cesta = $_SESSION["cesta"]->cesta;

to

$cesta =& $_SESSION["cesta"]->cesta;

you need to pass it by reference or use

foreach($_SESSION["cesta"]->cesta as $producto)

see php manual for references;

if you dont use a reference (=&) the $_SESSION["cesta"] will change from an object to array after the line 50

[voitek]

Thank You, it seems to be working fine. I hope You pinned down the problem. I have spent last two days on it with no succes.

How come it worked sometimes.?

Listen, if You´re ever in Madrid feel free to give me a ring. I´ll show You around.

Here´s the digits: [phone]

Thank u again.

[kubis]

Originally posted by voitek
How come it worked sometimes.?

Because it always worked if the method was called for the first time on the new $_SESSION["cesta"] object

you can try to debug it in Zend IDE; you will see that it changes the vartype from object to array AFTER the first ->add() call on the line 50

[voitek]

You´re the man.