That's true.
There are a ton of features in modern PHP which address a lot of the common criticisms brought against it. Doing a proper comparison with other languages (framework to framework, not framework to language) I think PHP measures up reasonably well.
But there is so much terrible, legacy code out there. The evolution, if it's happening is happening very slowly.
One thing I learned from NodeJS is that the quality of the community around a language can matter more than the language. JavaScript is a crap language, but the NodeJS community and the base of available modules is just so good that it makes up for a lot of the language's faults. When I tried it out I thought "who says you can't polish a turd?" I mean... Joyent and Node's community have buffed that thing down to gleaming crystal.
In counterpoint -- Java's actually a pretty good language, but its community's addiction to criminal overengineering is a big reason it hasn't been "sexy" in some time.