CentOS 7, PHP : Cant write to files

[Paintball]

Hello I'm running CentOS 7 (LAMP) with PHP 7.3 and I can't write to files, I've checked via "is_writable" function in PHP. I even have SELINUX disabled and it's not working.
I've done:

> chown -hR root:root /var/www/html

EG:
file_put_contents... doesn't work
also the error_log.log is not being written