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Posted by Robert Cummings on 09/21/05 08:24
On Wed, 2005-09-21 at 01:20, Rasmus Lerdorf wrote:
> Robert Cummings wrote:
> > I think you mean novice use. There are certainly times when assigning an
> > object to a variable I want all the values currently referring to that
> > object to see the update and not just the variable being assigned to. I
> > understand that objects in PHP5 are passed by reference under normal
> > assignment, but it's a copy of a reference and not a reference to a
> > reference.
>
> I am not sure I would call it novice use. Normally you simply want to
> manipulate the object itself. As in:
>
> class foo {
> public $prop = 1;
> }
> $a = new foo();
> $b = $a;
> $b->prop++;
> echo $a->prop;
>
> This will of course output 2. Manipulating the object through any of
> its references will be reflected in all the others as there is just one
> object here.
Absolutely, but that's the object's properties, but sometimes when
assigning a new object, you want all references to the previous object
to also be updated.
Cheers,
Rob.
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