PHP OO is a HORRIBLE IDEA. if you're doing OO PHP, shoot your other foot right now and go learn PHP before using it java-style.
Why is it that every time somebody on HN explains that a technology is not suitable for a use case, it gets downvoted by fans of said technology ?
PHP is naturally (due to it's C libs) non-OO and will thus only implement OO "that" far.
Lastly, OO is not a silver bullet and is best used only in front-end, and languages that were designed with it in mind.
It IS possible to make "business good" software in brainfuck, that's just not a reason to call it "not broken".
See, this is about science, logic, and whether or not a feature is properly supported by a language, not about whether or not somebody managed to build and sell a solution while using that feature.