Re: [PHP4BETA] Running PHP3 and PHP4

On Tue, Sep 07, 1999 at 10:58:07PM +0200, Zeev Suraski wrote: > At 18:06 07/09/1999 , Stig Bakken wrote: > >On Tue, 7 Sep 1999, Sascha Schumann wrote: > > > >| On Tue, Sep 07, 1999 at 05:09:27PM +0200, Stig Bakken wrote: > >| > On Tue, 7 Sep 1999, Andrey Zmievski wrote: > >| > > >| > | Is there a way to set up both PHP3 and PHP4 to run as Apache modules > >| > | on the same server? > >| > > >| > Only if you find and rename all functions in php4 with the same name but > >| > different return value/arguments than the same function in php3. > >| > >| I think this is called "versioning." Sun has used it for > >| years in their libraries and GNU libc 2.1 uses it by default > >| as well. > > > >I seriously think we should make it possible for users to link with both > >php3 and php4, especially when it is more or less just a matter of adding > >a few defines to php3_compat.h. > > It isn't. PHP 3.0 and 4.0 modules may interfere with each other; Finding > and changing the names of all of the API functions is very annoying task, > and isn't something we want to do generally (why rename the API?), etc. You assume that it requires explicit action involving massive code changes. If this would be the case, I also wouldn't encourage it. I don't know exactly how versioning works in i.e. the C library, but I do know that it's completely transparent to users and developers. I see this as a benefit - if it's easy to realize and it doesn't interfere with other parts because of technical reasons, there is hardly any chance of doing something wrong. -- Regards, Sascha Schumann Consultant