How to find CentOS or RedHat version?

Most Red Hat-based distributions, like CentOS, should have a file called redhat-release which will contain the CentOS version

Run the following to see what version running on your system

tail /etc/redhat-release

or

cat /etc/redhat-release

or

cat /etc/*release*

or

rpm -q centos-release

Using your redhat-release file, you can find your distribution, version and update number. This information is very helpful for technical support staff as well as knowing if you are up to date with the latest patches

How to disable phpinfo

The phpinfo() function is a very powerful one,  you can learn quite a lot about your PHP installation. Some server administrators may choose to disable the PHP function phpinfo() for security reasons, because it displays information which can be used to compromise the server that your site is running on. You can completely disable phpinfo(). First find the php.ini file :

php -i| grep php.ini

Open php.ini with VI or Pico.

#vi php.ini 

change the line that includes the disable_functions directive so that it says :

disable_functions = phpinfo

– If you have access to WHM, login to WHM. See Service Configuration on the Right Sidebar. Click PHP Configuration Editor. Click Switch to Advanced Mode. Find the disable_functions directive, add the following in that directive

phpinfo

– If you only have access to .htaccess, you can use the following In .htaccess, add a line that says

php_value disable_functions phpinfo

Note: disable phpinfo means that you cannot check PHP version with phpinfo()