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Cc: internals@lists.php.net
Date: Sun, 28 Mar 2004 17:40:28 -0500
To: Jon Parise <jon@php.net>
Subject: Re: [PHP-DEV] reload() in Python, Possible in PHP?
From: george@omniti.com (George Schlossnagle)


On Mar 28, 2004, at 4:36 PM, Jon Parise wrote:

> On Sun, Mar 28, 2004 at 03:57:22PM -0500, Andrew Heebner wrote:
>
>> AFAIK, Python supports the reload() method, which lets you dynamically
>> control includes while a script is running.
>
> This is conceptually easier to implement in Python because a module is
> its own namespace.  In PHP, the "stuff" that is included from another
> file has no such common organization.
>
>> In PHP, even workarounds are tough to create reloadable modules for
>> scripts, so, what other means are there to reload includes, and
>> redeclare functions?
>
> If it's not already safe to include() your file multiple times, I
> don't think adding a reload() function to PHP is going to improve your
> situation all that much.  The engine would have to do a fair amount of
> work to figure out how to "reload" the contents of the external
> script.

You can do this easily enough in an extension.  Combine the 
function/class tracking stuff that APC performs and internally use the 
overide_function() function from APD.  Obviously that would require a 
bit of glue to get it working, but the primitive facilities are all 
there.

I don't see any of that ever making it's way into PHP proper though.

George