This will not work.
As stated in the PHP documentation "Static closures cannot have any bound
object "
A static Closure has no context of "this" just as with any other static
object.
A workaround is to pass in the Closure as a parameter to achieve a similar
result.
class TestClass {
public static function testMethod($function) {
$testInstance = new TestClass();
$function = $function->bindTo($testInstance);
call_user_func_array($function, [$testInstance]);
// should be true
}
}
TestClass::testMethod(function($param){
var_dump($this === $param);
});
On Fri, May 31, 2013 at 2:32 PM, Nathaniel Higgins <nat@xxxxxxx> wrote:
> I'm talking about PHP 5.4. `bindTo` is a Closure method in PHP 5.4, and
> allows you to set the `$this` variable inside of a Closure. However,
> apparently you can't use it on Closures created inside static methods.
>
> I knew that you could create another function which would return the
> Closure, however, that isn't what I asked. I wanted to either use the
> `bindTo` method on a static Closure, or create a non-static Closure in a
> static method.
>
>
> On 31 May 2013 19:25, David Harkness <david.h@xxxxxxxxxxxxxxxxx> wrote:
>
> > On Fri, May 31, 2013 at 10:54 AM, Nathaniel Higgins <nat@xxxxxxx> wrote:
> >
> >> Is it possible to bind an instance to a static closure, or to create a
> >> non-static closure inside of a static class method?
> >>
> >
> > PHP doesn't have a method to do this. In JavaScript you can use jQuery's
> >
> > var func = $.proxy(function () { ... }, object);
> >
> > In fact, you cannot use $this inside a closure at all (unless 5.4 has
> > added a way that I haven't seen yet). You can get around that by
> declaring
> > a local variable to hold a reference to the instance to use with "use".
> It
> > looks strange here because you're also passing in $testInstance for the
> > comparison.
> >
> > <?php
> > class TestClass {
> > public static function testMethod() {
> > $testInstance = new TestClass();
> > $closure = $testInstance->createClosure($testInstance);
> >
> > call_user_func($closure);
> > // should be true
> > }
> >
> > private function createClosure($testInstance) {
> > $self = $this;
> > return function() use ($self, $testInstance) {
> > return $self === $testInstance;
> > }
> > }
> > }
> >
> > TestClass::testMethod();
> >
> > Peace,
> > David
> >
> >
>
>
> --
> Thanks,
> http://nath.is
> @NatIsGleek <http://twitter.com/natisgleek>
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