wellyour php.ini for the wiki instruction compile will be in /opt/lsws/php/php.ini When you install zend it will link it to zends location.
The way I do the php I totally replace system php and all that by installing in prefix=/usr/local That way you just have one php and not 2, Easier to install pear modules, do phpize, etc. Otherwise you will be doing /php5/bin/phpize etc. But The way the wiki hasd is for people who may wanna go back to apache, it makes it very easy. Me, I have no plans on going back to apache so I do it this way.
Also if you have cpanel, A real good way to build a good php for litespeed and system is to go in cpanel and do teh apache update, for php you select all the modules except like pdflib, java, etc. Then you build it. What this does is gets all dependencies for you.
You can get the dependencies manually if you want but i find this easier.
Then you will be able to use a configure like this one listed on my
phpinfo Then installing zend and other modules and patches is a breeze
I like to do this way because you will have a feature rich php and most likely wont need to compile again for missing stuff that some clients may need.