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Date: Tue, 01 May 2012 16:18:34 +0300
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Subject: Re: Bug/Req:#61422&#39003 enble Type Hint autoloading
From: danko@very.lv (Danko Alexeyev)

Hi everyone,

On 05/01/2012 03:25 PM, Laruence wrote:
>      if you pass a right instance of class to a function , how can that
> class not be loaded already?
>
>      for example:
>      function foo(Foo_Bar $a) {
>      }
>
>      how can you pass a Foo_Bar instance to function foo without
> Foo_Bar class already defined?
>

Because Foo_Bar could be *defined* under a different name, say, 
Foo_Blah. Then, as soon as someone needed Foo_Bar, we would use 
class_alias to add an alias. That is, as soon as someone tried using 
Foo_Bar it would turn out that Foo_Bar and Foo_Blah are the same class 
and all Foo_Blah objects are *also* Foo_Bar objects and everything is 
cool. Therefore foo(new Foo_Blah()) would work (if there was autoload).

Please see the demo I provided at https://bugs.php.net/bug.php?id=61422

Then again, at least it's consistent with instanceof. Where calling 
autoload by default is probably indeed unacceptable.

This is complicated.

-- 
Best regards,

Danko Alexeyev,
VeryPositive

+371 2648 3953
danko@very.lv
Skype: d.alexeyev