mod_php update?

Note: I had previously posted a similar thing to
alt.os.linux.slackware and was mildly rebuked for not finding a better
forum - hope this isn't too objectionable here.

Alright - first, objective: Trying to get PHP with pdflib support for
some stuff... have the default apache 1.3.27 installed, with mod_php.
I've recompiled PHP with the two configure statements below (both
4.3.1 and 4.3.2 now) and the issue is - mod_php still shows as version
4.2.3, unchanged. What am I missing?

../configure --prefix=/usr --with-apxs=/usr/sbin/apxs --enable-exif
--enable-track-vars

--with-calendar=shared --enable-magic-quotes --enable-trans-sid
--enable-wddx --enable-ftp --enable-inline-optimization
--enable-memory-limit --with-imap=/usr --with-mhash=/usr
--with-mcrypt=/usr --with-openssl=/usr --with-gettext=/usr
--with-pdflib=/usr/local

and the latest:

../configure --prefix=/usr --with-apxs=/usr/sbin/apxs --enable-exif

--with-config-file-path=/etc/apache --with-openssl=/usr --with-bz2
--with-calendar=shared

--enable-magic-quotes --enable-trans-sid --enable-wddx
--enable-ftp --with-gd --enable-gd-native-ttf
--enable-inline-optimization --enable-memory-limit
--with-jpeg-dir=/usr --with-imap=/usr --with-mhash=/usr
--with-mysql=shared,/usr --with-xml=shared,/usr --with-zlib=/usr
--with-mcrypt=/usr --with-gettext=/usr --with-pdflib=/usr/local

The second one successfully configures, compiles, installs... but,
again, after a restart of apache, the phpinfo still shows 4.2.3.

Making me insane... tips/hints/flames?