[dave111]

Does anyone know why reference variables with a session does not seem to work?
For example:

PHP Code:

class testing {

    var $sessvar;

    function testing(){

        $this->sessvar =& $_SESSION['test'];

    }

    

    function doSomething{){

        $this->sessvar = 'Hello World';

    }

} 

Why when doing "$this->sessvar = 'Hello Work';" does it not update the $_SESSION['test']?

[Nico]

It's working for me.

PHP Code:

class testing {
    var $sessvar;
    function testing(){
        $this->sessvar =& $_SESSION['test'];
    }
    
    function doSomething(){
        $this->sessvar = 'Hello World';
    }
}  


$test = new testing();

$test->doSomething();

echo $_SESSION['test']; 

... outputs "Hello World".

[dave111]

Ok I've narrowed down the issue to this:

PHP Code:

class testing {

    var $sessvar;

    function testing(){

        $this->sessvar =& $_SESSION['test'];

    }

    

    function doSomething(){

        unset($this->sessvar);  // <-- This line i want to clear out the $_SESSION['test'] but instead it appears to break the link between the variables, what should instead of "unset" to clear the session?

        $this->sessvar = 'Hello World';

    }

}  

echo $_SESSION['test']; 

[Nico]

When unset()'ing references, the original variable maintains untouched. Do $this->sessvar = null; or something like that.

[UnrealEd]

if you pass on the variable as reference, you will always clear the original variable as well when you clear the new variable, that's the idea behind passing as reference

If you simply want to pass on the value of the $_SESSION['test'] variable, don't use the apmersand in front of $_SESSION['test']. Now you can clear the $_SESSION['test'] variable by using:

PHP Code:

unset ($_SESSION['test']); 

[dave111]

Originally Posted by Nico

When unset()'ing references, the original variable maintains untouched. Do $this->sessvar = null; or something like that.

Thank You.