Specially looked now a dozen vacancies middle php developer with CP above $1500/m and found no vacancies, which would have required ReactJS, but sometimes write, that would be a plus nodejs, but in these vacancies and want golang and RoR and other back languages/frameworks. I think you don't need ReactJS and node too, most likely. For a couple of jobs to spend time learning those things when it's better to learn something from the world of PHP.
jermaine21 answered on March 19th 20 at 09:01
Better 5 know php. If you understand that without nodejs can't live - then teach :) And React it's all frontend, you don't need to know it.
For the General development of course you can a week to go through all of this, for sure will benefit, but not necessarily deeper.
marielle answered on March 19th 20 at 09:03
Study is not necessary, but desirable.
And PHP 5+, if in employment.
If only the work, it is necessary to know more
lilian.Lesch answered on March 19th 20 at 09:05
One does not exclude the other :)
In short - the answer is "Yes, you need to". At least I answered.
However, although all these colbecki and look a complete misery, but suddenly come in handy?))
By the way, React is not a server)) and it is even a client) just collect it on the gcd.