Re: Closure::call() to access private data, really ?
| From: | Jakub Kubíček | Date: | Sun, 19 Apr 2015 20:23:10 +0000 |
| Subject: | Re: Closure::call() to access private data, really ? | ||
| References: | 1 2 3 | Groups: | php.internals |
| Request: | Send a blank email to internals+get-85871@lists.php.net to get a copy of this message | ||
My opinion is, that we simply have to change PHP closures' scoping to be
more similar with JavaScript functions' scope. That would solve the current
challenge pointed on by @jpauli, thus closure would have access to private
object's members only if it was defined in that object's class / method
definition, so then engine can know that it was programmers intention. I
mean something like this:
<?php
$p = function() { $this->privateMember = new stdClass; };
class C {
private $privateMember;
private $closure;
function __construct() {
$this->closure = function() {
$this->privateMember = 32;
};
}
function callClosure() {
$this->closure->call($this);
}
}
$c = new C;
$c->callClosure(); // would succeed
$p->call($c); // Fatal error
?>
What do you think about this kind of behavior?
Best regards,
Kubo2
2015-04-17 22:03 GMT+02:00 Marco Pivetta <ocramius@gmail.com>:
> On 17 April 2015 at 18:43, Ferenc Kovacs <tyra3l@gmail.com> wrote:
>
> > For the record this isn't exclusive to Closure::call, afaik the same
> thing
> > is possible with Closure::bind() since 5.4
> > http://3v4l.org/hlFS4
> > And there are/were a decent amount of discussion (and AFAIR even hydrate
> > libraries using this trick) about this, for example:
> >
> >
>
> http://ocramius.github.io/blog/accessing-private-php-class-members-without-reflection/
> >
>
> Also note that this is the only way to access private properties by-ref
> (yes, I do need that for my horrible use-cases. No, don't ask about it.)
>
> Marco Pivetta
>
> http://twitter.com/Ocramius
>
> http://ocramius.github.com/
>