I'm not getting this hammer metaphor. OK, so a hammer is good for pounding nails and not good for fixing a watch. If we're having this whole discussion because

I'm not getting this hammer metaphor. OK, so a hammer is good for pounding nails and not good for fixing a watch. If we're having this whole discussion because people have noticed that PHP is the frequent common factor in buggy, poor-security web applications, then what is PHP actually good for?