"Advanced" PHP Installing

i want to install PHP 5.2.5 with shared extensions on a linux Centos 4.4 well everything goes fine i installed and it work but i found out that when you use for example --wtih-mysql it bundles the mysql extension in the php it self so i find out about the shared directive and i did --with-mysql=shared,/mysql/path now php is building the mysql.so but when i include it in php.ini and restart the server i get the folowing error in httpd.conf: PHP Startup: Invalid library (maybe not a PHP library) 'mysql.so' and the extension doesn't work. I was very disapointed and building the php 10 000 times, and then i decided to use extensions bundled in the php and i remove all the shared directives from the ./configure command and build the php and miracle happend when i saw the configure command in phpinfo() it was very different from the one that i wrote in console every extension had "shared" (even the extensions that doesn't haved shared directive before i remove them) and they didn't make errors in httpd.conf and they work perfectly, but not for long after the next rebuild everything was again or bundled or drops errors in httpd.conf and not working.

So lets cut it out:

How can i make all extensions shared and enable/disable them from php.ini