Wordfence global php.ini entry

As an attempt to harden all my WordPress installs I’m installing Wordfence plugin to all of them. I’ve got them all up and running.

But you’re told to add a line to the php.ini as soon as the plugin is installed.

here are some of them as examples:

auto_prepend_file = ‘/home/sitename1/public_html/wordfence-waf.php’
auto_prepend_file = ‘/home/sitename2/public_html/wordfence-waf.php’
auto_prepend_file = ‘/home/sitename3/public_html/wordfence-waf.php’
auto_prepend_file = ‘/home/sitename4/public_html/wordfence-waf.php’
etc.

I am trying to add these lines to my global php.ini rather than creating and then adding a line in the php.ini to all the sites’ roots.

according to this documentation https://docs.wordfence.com/en/Web_Application_Firewall_Setup?utm_source=plugin&utm_medium=pluginUI&utm_campaign=docsIcon scroll down

When using a single php.ini on servers with multiple sites, you have to use this:

[HOST=host1.example.com]
auto_prepend_file = ‘/path/to/site/wordfence-waf.php’

or this:

[PATH=/path/to/site/]
auto_prepend_file = ‘/path/to/site/wordfence-waf.php’

have you any idea which one I use, the HOST or PATH one?

And if so, which is the HOST or PATH I should use?