accessing one object's attribute from another

Hi all, I've be developing with a structured approach for a long time
and am working at improving my site by adding some classes etc. I
however, am running into an odd thing that I can't figure out what a
reasonable search syntax would yield the desired solution. The problem
is as follows:

class a {

var $thisVar;
...
}

class b {

function hello()
{
echo $first->thisVar;
}
}

$first = new a();
$first->thisVar = "world";

$second = new b();
$second->hello();


There are a number of variables and methods that are common throughout
the user's session that I'm storing in object $first. Class b has
nothing in common with a except that it needs a couple of the variables
stored in the object that is hanging around in the session.

Is $first->thisVar the wrong way to reference that variable? How can I
get to it?

TIA,

Larry

Perhaps I misunderstood the problem, but I would simply...

On So, Sep 09, 2007 at 10:06:15 -0400, Larry Brown wrote:
> Hi all, I've be developing with a structured approach for a long time
> and am working at improving my site by adding some classes etc. I
> however, am running into an odd thing that I can't figure out what a
> reasonable search syntax would yield the desired solution. The problem
> is as follows:
>
> class a {
>
private $thisVar;

public function getThisVar() {
return $this->thisVar;
}

public function setThisVar($v) {
$this->thisVar = $v;
}

> ...
> }
>
> class b {
>
> function hello()
> {


echo $first->getThisVar();


> }
> }
>
> $first = new a();

$first->setThisVar("world");

>
> $second = new b();
> $second->hello();
>
>
> There are a number of variables and methods that are common throughout
> the user's session that I'm storing in object $first. Class b has
> nothing in common with a except that it needs a couple of the variables
> stored in the object that is hanging around in the session.
>
> Is $first->thisVar the wrong way to reference that variable? How can I
> get to it?
>
> TIA,
>
> Larry
>
>
>
> --
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Larry Brown wrote:
> Hi all, I've be developing with a structured approach for a long time
> and am working at improving my site by adding some classes etc. I
> however, am running into an odd thing that I can't figure out what a
> reasonable search syntax would yield the desired solution. The problem
> is as follows:
>
> class a {
>
> var $thisVar;
> ...
> }
>
> class b {
>
> function hello()
> {
> echo $first->thisVar;
> }
> }
>
> $first = new a();
> $first->thisVar = "world";
>
> $second = new b();
> $second->hello();
>
>
> There are a number of variables and methods that are common throughout
> the user's session that I'm storing in object $first. Class b has
> nothing in common with a except that it needs a couple of the variables
> stored in the object that is hanging around in the session.
>
> Is $first->thisVar the wrong way to reference that variable? How can I
> get to it?

$first doesn't exist to $second - you need to make it so it knows what
it is.

class b {
var $first;
function __construct($first) {
$this->first = $first;
}

function hello() {
echo $this->first->thisVar;
}
}

then you:

$first = new a();
$second = new b($first);
$second->hello();

--
Postgresql & php tutorials
http://www.designmagick.com/

On Mon, 2007-09-10 at 12:45 +1000, Chris wrote:
> Larry Brown wrote:
> > Hi all, I've be developing with a structured approach for a long time
> > and am working at improving my site by adding some classes etc. I
> > however, am running into an odd thing that I can't figure out what a
> > reasonable search syntax would yield the desired solution. The problem
> > is as follows:
> >
> > class a {
> >
> > var $thisVar;
> > ...
> > }
> >
> > class b {
> >
> > function hello()
> > {
> > echo $first->thisVar;
> > }
> > }
> >
> > $first = new a();
> > $first->thisVar = "world";
> >
> > $second = new b();
> > $second->hello();
> >
> >
> > There are a number of variables and methods that are common throughout
> > the user's session that I'm storing in object $first. Class b has
> > nothing in common with a except that it needs a couple of the variables
> > stored in the object that is hanging around in the session.
> >
> > Is $first->thisVar the wrong way to reference that variable? How can I
> > get to it?
>
> $first doesn't exist to $second - you need to make it so it knows what
> it is.
>
> class b {
> var $first;
> function __construct($first) {
> $this->first = $first;
> }
>
> function hello() {
> echo $this->first->thisVar;
> }
> }
>
> then you:
>
> $first = new a();
> $second = new b($first);
> $second->hello();
>
> --
> Postgresql & php tutorials
> http://www.designmagick.com/
>

Thanks Chris and Robert, these both should work fine and was just what I
was looking for.

Larry