Jivitesh P Staff asked 3 years ago
PHP/FI 2.0 is an early and no longer supported version of PHP. PHP 3 is the successor to PHP/FI 2.0 and is a lot nicer. PHP 8 is the current generation of PHP, which uses the Zend engine 4 which, among other things, offers many additional OOP features.
I hope this information will be a great help.