Phalcon Installation Tutorial - basicEdit on GitHub Phalcon Developer Tools Installation Phalcon Developer Tools PHP Performence On Framework And Event-driven PHP (1) Require PHP >= 5.5 curl gettext gd2 (to use the Phalcon\Image\Adapter\Gd class) libpcre3-dev (Debian/Ubuntu), pcre-devel (CentOS), pcre (macOS) json mbstring pdo_* fileinfo openssl Optional Depending PDO Extension as well as the re..