It IS already installed !
just not turned on
or should be installed .
zypper in apache
if you currently have no idea HOW to set it up nor configure it nor lock it down
build everything from the source and install from source for the first 6 or 12 time you install it .
using the prebuilt will not save you time in configuring Apache,MySQL, PHP5,PhpMyAdmin,and then the CMS ( web site )
but only add time in learning HOW to set it up
I always liked using "geekLog"