That will never happen, and it would be also a wrong thing to do, as the example of python shows. One of the main strengths of PHP is a low barrier of entry, which also includes things like you google how to do something, and what you googled indeed works. This is often true for PHP. Nothing was more frustrating as googling how to do something in Python, as a complete newbie, and then after fighting with what I have found, realizing that it is a Python 2 solution, and I choosed version 3, since that's what "elders" advised.

Anyway, PHP is alive and well, people picks it for new projects too, and 7 was a big jump forward in the right direction, imho... it is just slowly getting better. People also thought that C++, my second favorite language, is also destined for graveyard...and, it isn't. :-)