Passing an instance of a class

[Anon]

Hi

Does anyone know if an instance of a php class can be passed via the query string to another page?

I have created a class called Contact, and I instantiate it in page1.php using

$c1 = new Contact();

I am able to call methods of $c1 here. Then, I want to pass $c1 to another php, using an href = "page2.php?obj=$c1".

Once passed to page2.php, I wan't to be able to access "$obj" which is supposed to be the same instance of Contact that I created and passed from page1.php, but
I am having trouble getting this to work.
I keep getting the following message:

Fatal error: Call to a member function on a non-object

Please help!!!

Regards
Alex

[Anon]

Hi!

You should register the class instance as a session variable and pass it through a session id to the next page.

See Sessions in PHP docs.

Best regards,
Stas

[Anon]

Thanks for the info.

I did try to use a session, even using a very simple example from a book, like this one:

<?php
session_start();
session_register("sess_var");

$sess_var="Hello World";
echo "The content of \$sess_var is $sess_var";

?>

However, I get the following error in a Microsoft alert box:

"php.exe has encountered a problem and needs to close. We are sorry for the inconvenience..."

followed by a choice to send or not send the error report to microsoft.

I did some reading and found out that the use of sessions works only if PHP was compiled with the --enable-trans-sid option. After searching and searching, I found this can only be done in a Unix-like environment. I'm developing in the Windows XP environment.

Do you have any idea why I can't start a session using the session_start() command in Windows?

I tried to find the answers myself for the last few days, but now I'm really stuck.
Please help.

Thanks
Alex

[Anon]

Hi, Alex!

I have not had that much experience with using sessions - I also develop on a Windows box, although I have Windows 98. You should probably do a search for similar posts on this forum. I think there was a similar thread here a while ago.

Best regards,
Stas