2. Sure, but your code will also suck and be hard to maintain.
3. Nonsense. You might as well say that everyone should use C because it was the first language with a TCP socket API.
4. Nonsense. You can fuck up royally in any language.
5. Irrelevant. The only framework that matters is the one you end up using. Pick a good one and stick with it.
6. For some valuation of "best". Other popular web frameworks and languages also have very good documentation. I'll give PHP the benefit of the doubt on this one, since I don't really know.
7. Again, lots of blogs for other languages too. Also, many PHP blogs are full of shit code (as are many other blogs). Generally, you know what you're doing or you don't. Unless you're reading a type theory blog, you're not going to magically become a good programmer by reading blogs.
8. No experience with PHP's community, but again, lots of other languages have good communities.
9. Lots of other languages integrate with everything too. These last four bullet points aren't really "PHP is good" but just "popular languages have lots of libraries", i.e. tautologies.
10. Heh.
11. So does everything else. Not a strong point in PHP's favor.
Color me unconvinced.