You're right, though I think that AppCode is an unusual case; you can only use it on OS X, right? It is a completely different beast. For IDEA, though, you can

You're right, though I think that AppCode is an unusual case; you can only use it on OS X, right? It is a completely different beast. For IDEA, though, you can indeed get the same functionality of PHPStorm, PyCharm, etc, by simply using their respective plugins for IDEA. However, the plugins are sometimes behind the stand-alone IDEs, in terms of features.