session variables containing Objects

Anon

Hi,
I have posted this query a few times before but it does not seem to interst anyone...probably too trivial but I am a php beginner and any help will be greatly appreciated!

When I register a session variable and assign it to a new Object of my class in one page and try and access the methods of this object in a different page I get the following error:
Fatal error: The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition test of the object you are trying to operate on was loaded before the session was started in/www/htdocs/rajiv/project/php/secondpage.php on line 18

I have included the class definition of test.php in file that accesses the session variable and have also included a session_register( ) after that.
Can anyone tell me what is it that I am missing??!

any help will be greatly appreciated.

Rajiv

[deleted]

did you include the class definition BEFORE the session_start()?

Anon

I tried that but have the same error still.

In file1.php I have:

include_once 'test.php'
session_start( );
session_register("temp");
$temp = new Test( );
.....

In file2.php (which handles onSubmit of file1.php)

include_once 'test.php'
session_register("temp");

$temp->getName(); // error for this statement

anything that I am missing?

Rajiv

Anon

Did you ever et this working? I'm having similar problems with PHP4 on Windows. I am pretty sure I'm doing things correctly. I can get my object to stay in a session variable, but I can't seem to get its methods to stayt with it no matter what I do. I only can get its properties to serialize.

Brandon

Anon

I did find after a lot of searching and painful experimentation that PHP does only a shallow copy of objects as opposed to a deep copy that most full fledged Object Oriented languages do. This means that when a variable that is an instance of a class is copied to another (for ex when it is stored in session), only the first level of attribtues are copied. As a result, if an object is placed in session, only its members vars are accesible in the next page but there is no way we can access members which are objects themselves.

As a workaround, I had to change my designed which had quite a few of nested classes (by nested I mean class A has B relation) and replace them with arrays.

Hope that helped..

Rajiv

Anon

Out of curiosity - did you try:

serializing and unserializing the object(s) to be stored in the session yourself?
a different serialize handler such as wddx?

Alok