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	"Rack-Soft security" <sec@rack-soft.ro>
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Date: Sun, 18 Oct 2009 08:02:12 +0300
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Subject: Re: [PHP-DEV] Autofunc patch (automatically loading functions like autoload)
From: sv_forums@fmethod.com ("Stan Vassilev")

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Hi,

Unfortunately there may be a problem with this path and namespaces in =
5.3. I tried to warn about this while namespaces were being implemented, =
but everyone was in the "autoload will always be for classes only".

Right now when you use fully qualified name of a class when inside a =
namespace, you need to always prefix it with backslash: \Foo.=20

For functions, it was deemed too hard as most internal functions remain =
in global space, so inside a namespace one would need to prefix every =
call with a backslash. If you don't prefix with backslash, the =
interpreter will try both options at runtime: if there's a local =
function, it'll run, if there isn't, it'll try to find it in global =
space, and only if it's not there, it'll fail.

The only reason this double lookup works is because there's no autoload =
for functions, and it's the reasons why classes don't have this feature. =
There was a big discussion back about how to enable them both without =
severe performance penalty or unintuitive behavior, but none was found.=20

I am myself a big proponent of autoload for functions, as there was =
never a good reason for excluding them from autoload (except for the =
artificially introduced one in 5.3).

Regards,=20
Stan Vassilev=20
  ----- Original Message -----=20
  From: Rack-Soft security=20
  To: internals@lists.php.net=20
  Sent: Friday, October 16, 2009 5:32 PM
  Subject: [PHP-DEV] Autofunc patch (automatically loading functions =
like autoload)


  Hello,

  I am submitting quite an interesting patch to PHP 5.2.11 and PHP =
5.3.0. It is used in production on hundreds of machines without any =
issues.

  Basically the patch adds the autofunc function that performs quite in =
the same way like autofunc, only that it does it for functions. As do =
you know, if PHP can not find a function it will issue a fatal error. =
With autofunc you can find the function somewhere and load it. =
Management of large no OOP projects (or mixed OOP/procedural) is much =
easier with this. I know that there are workarounds for loading =
functions, like adding them static to classes, but this is not efficient =
and involves important changes to code.

  I have attached some PHP files to test with, you must execute =
index.php that will load autofunc when the loaded functions can not be =
found.

  Let me know if you have any questions regarding the patch.=20

  Best regards,
  Bogdan



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