Re: [RFC] Allow "use( $longname as $alias)" syntax for closures declaration

The only real use that I can see would be that it allows: public function getCallback() { return function() use ($this as $that) { $that->doSomething(); } } However, I think that would be confusing, since $that would only have public access... I'm not against the idea, I just don't see a strong use-case for it. It's not like your injecting the scoped vars into an existing function, you're writing the function fresh. So why not just use the existing var names? Anthony On Thu, Apr 12, 2012 at 12:36 PM, Ralph Schindler <ralph@ralphschindler.com> wrote: > On 4/12/12 11:25 AM, Laruence wrote: > >> Now you can not use $this >> >>       class foo { >>            public function bar() { >>                return function() use ($this) {  // PHP Fatal error: >> Cannot use $this as lexical variable >>                } >>            } >>       } >> >>  so you have to write: >> >>            class foo { >>            public function bar() { >>                $obj = $this; >>                return function() use ($obj) { >>                } >>            } >>       } >> >>   thanks > > > Correct me if I am wrong, but this is possible in 5.4 with the > Closure::bindTo() API, as well as the implied binding of $this. > > Working in my code: > > > class ServiceLocator > { >    protected $services = array(); > >    public function __construct() >    { >        $this->services['DbAdapter'] = function () { >            return new DbAdapter( >                $this->get('Configuration')['db'] >            ); >        }; >        $this->services['UserTable'] = function () { >            return new TableGateway( >                'user', >                $this->get('DbAdapter') >            ); >        }; >    } >    public function get($name) { > > ... > > > -ralph > > > -- > PHP Internals - PHP Runtime Development Mailing List > To unsubscribe, visit: http://www.php.net/unsub.php >