I've reworked the title a little bit, to give it a shot at staying open.
The red flag, in my mind, was the title. It seemed really open ended, even though when you read the question, it's quite specific. I've narrowed the title, but I haven't changed the actual question you've asked.
I've also re-opened the question, and I agree that it's on topic, constructive, and answerable.
Your question also has another problem: A lot of 'shopping'-esque answers. It's as if people take this to mean, "What should I use to install PHP?" Instead of the question that was actually asked. I removed the answers that didn't address the question at all (since they are, by definition, "Not an answer"). This may also be why your question was closed by the community -- it begat bad answers.
As far as Shog9 agreeing that it should remain open, there are two things you should realize:
Moderators disagree amongst each other regularly. We try not to fight in front of everyone, but we do have instances where we disagree. You can think of us more like the Greek Gods than The Circle.
Shog9 is a member of the Community team (the "Community Manager", as of this writing). While he is 'our boss' (if any such thing exists), he generally tries not to get in the middle of Stack Overflow moderation efforts unless he really needs to (examples include: moderators screwing up big time). In this case, there's no need to have Shog9 get involved, although he could if he really wanted to.