Get Phalcon · v6
Phalcon v6 is pure PHP. Composer installs it like any other package. There is no extension to compile or enable.
composer require phalcon/phalcon Status: release candidate, 6.0.0RC3.
PHP 8.1+ and these extensions: fileinfo, json, mbstring, pdo, xml.
Some components need more extensions, for example the PDO driver of your database, or gd or imagick for images.
Read the v6 installation guide and the v6 documentation.
You do not need IDE stubs for v6. The framework source is PHP, so your IDE reads it directly.
Phalcon v5 has the same API and the best speed. See Linux, macOS & BSD or Windows.