Setting up the free version of Intelephense in NeoVim's native LSP is a straightforward affair. However, importing the license key and using it can be a real headache as there is literally no documentation on how to do this. HOping trhis Gist comes in useful for somebody.
First, create a file called license.txt
in $HOME/intelephense/license.txt
and paste in your license key. Save that file.
Next we will want make sure we have intelephense installed on our host