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Date: Mon, 10 Sep 2007 20:08:43 +0200
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To: BuildSmart <buildsmart@daleenterprise.com>
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Subject: Re: [PHP-DEV] PHP_FALIAS()
From: hartmut@mysql.com (Hartmut Holzgraefe)

BuildSmart wrote:
> Thanks for the response, OK I think I can manage that with ease, what=20
> I'm contemplating to do is create a mysql_alias extension that aliases =

> the mysql extension functions to the mysqli equivalents

uh .... PHP_FALIAS() would only work for functions having
exactly the same parameter signature ... so it would only
work with a very minor subset of the mysql/mysqli functions
(if at all). For a lot of functions the signature changed
so that the database handle is now the first parmeter
instead of the last, and even for those that look similar
you have to take into account that mysqli relies on objects
(even for the procedural style functions) where ext/mysql
is all about resources, not objects.

There is also the concept of the default connection
in ext/mysql that does not exist in ext/mysqli at all
so that can't be emulated by just aliasing functions
either ...

While a ext/mysql -> ext/mysqli compatibility wrapper
might make sense it is way more effort to create one,
and if you really want to go that way i'd recommend
that you do a proof-of-concept implementation using
PHP code first before starting the effort to wrap
it up in a C extension.

That aside i don't think that it would make much sense
to create such a wrapper, ext/mysql being deprecated
says that we won't add any new features to it. There
are no plans to remove it though and any serious security
issues or possible incompatibilities with newer libmysqlclient
versions will still be fixed.

--=20
Hartmut Holzgraefe, Principal Support Engineer
               .
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