I will write a small, simple script, rather than import 5,000 Pear modules if it will decrease load, server time, and make life easier. Hell, if it requires any caching, I'll generally offer a file, db, or SHM based cache to keep things low if you are a small system.. if not, sometimes I cheat and use a file that's global across all hosts, and there are other options like mod_auth_tkt, etc, from there. It all depends on the requirements, and requests of those who need the work done.
I started, and still do admin work (I'm sure a few will pop up here), so I know both sides of that coin. Admins should get less work; code should do what it needs to and make the life of the admin easier.
If someone wants me to use OOP in a custom class, I have no problem with it. However, if it's 10 lines including sanitation, I will suggest it not be a requisite, but I will still provide what is asked of me, even if I disagree.
Drop it in an email to grouch%40grouchyadmin. I'll look it over, then may ask you to give me ssh, or the primary script's code, to see what I can do.