What is the definition of "something small"? Millions of users and companies use PHP based software for various business needs, from small to big.
Yes, the language has a lot of flaws, but I disagree that you can't create useful and rather "big" software with it. And it's easier compared to other languages. If it solves people problems, why not?
Nothing I said was meant to indicate you couldn't use php for something big. All I meant to indicate was that once you've seen what other languages have to offer and have started to look on programming as a craft php starts to lose it's shine.