Hi, of course only that course is no enough
Laracasts has many other PHP related courses
https://laracasts.com/series/object-oriented-bootcamp-in-php
https://laracasts.com/series/design-patterns-in-php
https://laracasts.com/series/php7-up-and-running
https://laracasts.com/series/solid-principles-in-php
and still not enough, www.php.net - bookmark this
from my point of view, if you want to learn PHP and you learn it from Laracasts - then you are lucky, here are some reviews https://github.com/laracasts/Feedback/issues/12