[codeguy]

I think it's less about being "superior" than standardizing on a common style. Makes it easier to get up and running with someone else's code. But if your team agrees on a common but different style, that's fine too. It accomplishes the same goal. I'm only suggesting the official standard for new PHP developers.

[kellishaver]

Right. I think the main take-away from it is to be consistent and make sure everyone on your team is on the same page about the coding style. I see the PSR as a basic set of good recommendations, rather than something that must be followed. It's a good idea to follow it, but at least follow something.

My only complaint with it personally is that I Can. Not. Stand. putting opening brackets on their own line.

[mgkimsal]

I understand it's not an either/or situation but...

I'd MUCH prefer people spend time writing tests for their code vs debating/arguing/refactoring code style. If your tests and good and coverage is high, there's far less chance I should ever even have to muck around inside your libraries, much less modify them.

And again, one doesn't preclude the other, but I see so many people making a bit stink over style - tabs vs spaces et al years before the PSR stuff - yet rarely do I see even 20% of that effort spent on getting people to test.

I say this not as someone who tests everything 100%, but as someone who doesn't do much of it, and understands the importance of it. When I'm deciding to use someone else's libraries, I never make a decision based on the code style they've chosen - I base it on maturity, documentation, and tests/examples provided (when there's a choice, sometimes you don't have a choice, or you roll your own). The really good libraries? I never even have to look a their code - it might be all run together on one line for all I care - it just works.

[kellishaver]

If a library works like it should, then you may never have to look at it - that's great. But if you're working on a team, you'll have to read and understand other people's code all the time, and even if you're not, someone, somewhere, is going to eventually want to make that library do something different.

I agree that, of the two, good test coverage is more important than pretty formatting, but a good code style is going to make the code easier to debug when those tests fail and easier to extend when the library needs to do more. It's a simple matter adopt a coding style that works and stick with it, so there's really no good reason not to do it.

By comparison, it does seem like a trivial thing to obsess over. There are a number of coding styles which are all fine in their own right. I think people should worry less about the specifics and more about the overall intent-to write consistent, clean code. How many blank lines you have after block of code or where you put the opening bracket doesn't really mater in the end, as long as you follow the same structure across the whole code base.

[mgkimsal]

One of the arguments/justifications for the PSR standards is to encourage interop of libraries (to be able to mix/match from various frameworks and projects).

Standardizing formatting for a team/project is not a bad thing, certainly, but if there's competing styles on a team, but they're making good progress - hitting deadlines, high test coverage, good/deep engagement with stakeholders, etc., code formatting is just not something I'd bother enforcing. It may be a later step to go back during a project post-mortem and get the code ready for 'deep freeze', assuming the project is 'done', but how often does that happen?

My perspective is probably a bit different than some here - I freelance, and work in multiple languages for different clients, often concurrently. In a 6 month period I had 2 PHP projects, 2 Grails projects and a Rails project, each running for several months and overlapping. I worked with a different group of people on each project, each with varying skill levels and backgrounds. I adopted my style/technique as best I could for each project, and didn't harp on formatting with anyone, because... it just really doesn't matter. What does bug the heck out of me is someone rechecking out my code, spending time reformatting it, then checking it back in, and counting that as 'work', when there's many many many other issues needing to be worked on.