How to turn off Parameter Hints on parameter name in PhpStorm 2017?
https://blog.jetbrains.com/phpstorm/2017/03/new-in-phpstorm-2017-1-parameter-hints/
How to turn off Parameter Hints on parameter name in PhpStorm 2017?
https://blog.jetbrains.com/phpstorm/2017/03/new-in-phpstorm-2017-1-parameter-hints/
navigate to Editor | General | Appearance and deselect Show parameter name hints.
(It's in the link you provided.)