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Message-ID: <ac08e8d0702090818h13518523h65d6ecf0abceddfa@mail.gmail.com>
Date: Fri, 9 Feb 2007 10:18:03 -0600
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Subject: Reflection API Injection Mechanism
From: wilson.jim.r@gmail.com ("Jim Wilson")

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Dear PHP Internals subscribers,

I have two quick questions regarding PHP 5's Reflection API (I apologize if
this isn't the right list to ask):

1) Is there a way to inject a method into a Class such that future
instantiations of that Class will have the method?  For example:

------------ Before -----------
class A {
    // Nothing
}
------------ Before -----------

------------ After -----------
class A {
    // method which was injected
    public function injectedFunc($someArg) {
        // ....
    }
}
------------ After -----------

Obviously I'm not looking for a way to modify class A's source code, just
the effective class A specification.

I know that PHP supports extending classes and interfaces, but in my
use-case that isn't really an option since I don't control the code which
instantiates the objects, and they're not using any kind of Factory pattern
for object construction that I could overload with my extended
implementation.

2) Is there a way to change a method which already exists, as in by
overwriting it with a new function?  I'm looking to do the equivalent of
JavaScript's 'function as member' treatment, where it's easy to do something
like:

------------ Snip -----------
// Obj is some object
Obj.meth = function (arg) { /* do something with arg */ };

// Then later on ...
Obj.meth('hello there');
------------ Snip -----------

Thanks in advance for any help, or for redirecting me to the correct list if
this isn't it.

-- Jim R. Wilson

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