Suse 9.2 tomcat and php

I have installed tomcat and added php-support with help of the php-servlet but it seem like php cant find any of the extensions installed. Like mysql. I have the php4-mysql package installed. If i run php -i from the commandline its telling me that I have mysql-support and a small php-script runned from the commandline verifies this. But if i run phpinfo() from a php-page under tomcat there is no support for mysql (or anyother extension). It tells me that its using /etc/php.ini and I have enabled the mysql extension in it. Anyone how knows why tomcat failes to find the php-extensions? /Andreas