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"OO PHP Question"

Just trying to rearrange my PHP code into a more object orientated enviroment.

This isn't a problem, it's more of a question....

My class is located in a separate file called "clsGenFunctions", OK?

I have made one function that unsets some session variables, and this function sits within the class.

function unsetit() {
unset($_SESSION['title']);
unset($_SESSION['intro']);
unset($_SESSION['item']);
unset($_SESSION['product']);
unset($_SESSION['imgchecked']);
unset($_SESSION['insuranceopt']);
unset($_SESSION['feedback']);
unset($_SESSION['payment']);
unset($_SESSION['keyfeaturearray']);
}

OK, with me so far?

Seeing as this function is in a separate file to where it will be called, will it unset those session variables?

I am calling it using this

session_start();
include "clsGenFunctions.php";
$func = &New genfunctions; //Create object called func
$func->unsetit();

Seeing as session_start has been initiated at the beginning, the session variables should be unset successfully shouldn't they?

Cheers for any replies.

Just trying to rearrange my PHP code into a more object orientated enviroment.

This isn't a problem, it's more of a question....

My class is located in a separate file called "clsGenFunctions", OK?

I have made one function that unsets some session variables, and this function sits within the class.

function unsetit() {
unset($_SESSION['title']);
unset($_SESSION['intro']);
unset($_SESSION['item']);
unset($_SESSION['product']);
unset($_SESSION['imgchecked']);
unset($_SESSION['insuranceopt']);
unset($_SESSION['feedback']);
unset($_SESSION['payment']);
unset($_SESSION['keyfeaturearray']);
}

OK, with me so far?

Seeing as this function is in a separate file to where it will be called, will it unset those session variables?

I am calling it using this

session_start();
include "clsGenFunctions.php";
$func = &New genfunctions; //Create object called func
$func->unsetit();

Seeing as session_start has been initiated at the beginning, the session variables should be unset successfully shouldn't they?

Cheers for any replies.

gamesfreak wrote:
> Seeing as session_start has been initiated at the beginning, the
> session variables should be unset successfully shouldn't they?

Yes it will be.
$_SESSION is a superglobal, as such its visible everywhere within the current execution of your program.

gamesfreak wrote:

> Cheers for any replies.

Shucks, really there's no need.

Cheers Garin, now I have a problem with something else....
(With a different function)

function goto($loc) {
echo "";
}

Basically just takes the user to another page.

Can't seem to use it though, upon calling it with

$func->goto('design.php');

I just get the error: -

Fatal error: Call to a member function on a non-object in /var/www/localhost/htdocs/project/transaction.php on line 107

Any ideas?

EDIT: Managed to fix this!

I did it by making a new object. It seems that calling objects from within a function doesn't work without making a new one!

Anyway, managed to sort this again without even having to use a new object! Hurrah!

Edit: Double post :(

Just been doing some thinking and I feel I need to revamp the project into true object orientation. Meaning objects are used in the correct manner and classes are not just function storage.

Problem, how do I pass 'objects' between pages?

Example:

class object {
var $objectproperty1;
var $objectproperty2;

function objectmethod() {
//code goes here

}

}

As you know, the above class defines an object, correct?

$a = new object;
$a->objectproperty1="chickens";
$a->objectproperty2="pies";
?>

How would I send the object "$a" to another page?

Now sure if I'm making myself clear.

Cheers for any help.

gamesfreak wrote:
> Problem, how do I pass 'objects' between pages?
>

What you want to be looking at is http://uk2.php.net/serialize
Serialize your object, pass the string between pages as you like, by DB, sessions, cookies etc. and then unserialize in the new page.

Excellent, cheers Garin, that did the trick!

You can store objects in sessions without serializing/unserializing them as this is done automatically. Just register the object variable in the session as normal, and you'll be able to use it in other pages. Remember to include the class definition before starting the session though, or PHP will give an unhelpful error message - just do:

include 'class_definitions.php'; //or whatever
session_start();

$myobect = $_SESSION['myobject']; //etc.