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Date: Sat, 08 Oct 2011 18:22:18 +0100
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Subject: Re: [PHP-DEV] 5.4 beta
From: glopes@nebm.ist.utl.pt ("Gustavo Lopes")

On Sat, 08 Oct 2011 11:02:57 +0100, Fr=C3=A9d=C3=A9ric Hardy  =

<frederic.hardy@mageekbox.net> wrote:

> Hello !
>
>> I don't think so, but if I had to summarize the innovations in 5.4,  =

>> this would be it:
>>
>> - Closures can now have an associated scope
>> - Closures can now have a bound object
>> - Closures can now be either static or non-static
>>
>> - Closures defined in a place with an active scope are scoped  =

>> accordingly
>> - Closures defined inside an instance method (or bound closure) have =
a  =

>> bound object (namely $this)
>> - Closures are static if defined within a static method or with the  =

>> static keyword (static function() { ... })
>
> Is it possible to have sample code about these ?
> They will be very interesting to understand the RFC correctly and writ=
e  =

> documentation or tutorial.
> For example, i was tryed to use $this in a closure with PHP 5.B beta  =

> without any success :/, so if using $this in a closure is possible, i =
 =

> would like to know how to do it..
>

You can take a look at the tests. For instance, this patch has many:

http://nebm.ist.utl.pt/~glopes/misc/closures_scope.patch

For more, you can look at the SVN tree (Zend/tests/closure_*).

In any case, here is a very simple example:

<?php
class A {
     private $foo =3D "bar";
     function foo() { return function () { return $this->foo; }; }
}
$a =3D new A;
$c =3D $a->foo();
echo $c(); //echos "bar"

-- =

Gustavo Lopes