I have RedHat 7.1 and wastrying to use the latest Apachetoolbox script.
I did finally get unixODBC to compile and install but could not talk to my sybase ASA server. the .php page would just hang at the odbc_connect command. I blew that away and found an actual sybase php modules and compiled that into php. So far that works great, tho I have not stressed it yet. I was just elated that it worked!!
Apachetoolbox seems to alter the scripts or something, I didn't trace it down. When I compiled php and apache manually, then stuff started working.