2012/11/7 Laupretre François <francois.laupre...@francetv.fr>
> > De : sebastian.krebs.ber...@gmail.com
> > > I hope you find more support on this than I had. Technically
> > speaking,
> > > it would be easy to extend autoloading to functions and constants. It
> > > can even be done without BC breaks, combining 'old-style' and 'new-
> > style'
> > > autoloaders without ambiguity (adding a second argument to the
> > > autoload hook, and checking the number of args declared by the
> > function).
> > >
> >
> > Thats not even required, if you fixate (--> default value) the second
> > parameter to "class" all existing loaders will behave, like they did
> > before.
>
> Correct, but that's not enough to preserve BC.
>
> OK, giving a default value of 'class' to the second arg allows using a
> 'new-style' autoloader with an 'old-style' PHP engine.
>
> But, now consider the opposite, using a 'new-style' PHP engine, with
> autoloading extended to functions and constants, with one or more
> 'old-style' autoloaders: when the engine needs to autoload a function or a
> constant, we must not call any 'old-style' autoloader, as it would take the
> symbol and attempt to load a class by that name. And the easiest way to
> decide if an autoloader is a new or old-style one is to check if the
> autoload handler func is declared with one or two args.
>
// signature
function spl_autoload_register($autoload, $type = SPL_AUTOLOAD_CLASS);
// "Old style"
spl_autoload_register(function($classname) {
// foobar
});
// "new style"
sply_autoload_register(function($name, $type) {
switch ($type) {
// Foobar
}
}, SPL_AUTOLOAD_CLASS | SPL_AUTOLOAD_FUNCTION | SPL_AUTOLOAD_CONSTANT);
Why is this "not enough"? Even if we pass the type as second argument to
the autoloader, nothing (in behaviour) will change. You are right, that we
must not call the first one, when it's not required, but also it _will_ not
get called, because it is not registered to get called for anything except
classes. Maybe I got you wrong?
If you want a more "organized" autoloader, create a class for it :)
class MyAutoloader {
public function __invoke ($name, $type) {
switch ($type) {
case SPL_AUTOLOAD_CLASS: return $this->loadClass($name); break;
case SPL_AUTOLOAD_FUNCTION: return $this->loadFunction($name); break;
case SPL_AUTOLOAD_CONSTANT: return $this->loadConstant($name); break;
default: return false; break;
}
}
// Here load*() functions
}
spl_autoloader_register(new MyAutoloader, SPL_AUTOLOAD_ALL);
Just my thoughts
>
> François
>
>
--
github.com/KingCrunch
