For me is the fact that PHP is starting to get more useful than Python. That coupled with the fact that it's faster (which doesn't take much, granted) is going to make me think some things over.
PHP still carries its legacy cruft around but if you can ignore that it's a useful language. As is often pointed out the real issue is all the PHP 5.4 and older code just hanging around and the desire to be backwards compatible in the hopes maintainers will upgrade PHP seems ... optimistic.
Also this new mantra of "speed doesn't matter" is what brought us to Windows 10, Electron, etc. No thanks. I'm taking a stand against slow software.