StuardoRodriguez
Copilot is online service; it's great, but it have delays and communicates your code over Internet.
Our IntelliPHP is local - the whole AI runs on your PC and it's optimized to provide shorter but much faster suggestions.
It may also suggest a snippet with placeholders instead of whole chunk of text. So it completes a piece of code where you fill in gaps.
Additionally it provides smart pre-select, so when you type ->, the completion list is pre-selected with most probable item.
On Visual Studio Code, there is no conflict, VSCode simply gives you suggestions from both Copilot and IntelliPHP and chooses better match.
On Microsoft Visual Studio, there was a bug in VS itself causing some problems, but it should be fixed now.
In which cases do we need / not need IntelliPHP?
Basically if you prefer shorter suggestions, faster, with no communications over Internet. IntelliPHP was there before Copilot become a mainstream; if we notice that majority of users have Copilot, we may stop providing it by default.