A question about Yum installs
 

Is it possible to specify extensions or options for a yum install?

For instance, I would like to install PHP with several specific extensions, is it possible for me to do it through yum?

CentOS 5.2 :
# 'yum search php' will display 64 "php-" packages
which of course can be chain installed with
# 'yum install <package1> <package2> <package3> .. '
( Or use the package manager )

If your question is a php compiled with special
options, you can use 'rpmbuild' to make package(s)
from the php src.rpm .
Add your options to the configure line in the spec
file.
....