Wait, this PHP-GTK thing is abandonware! Last release in 2008, and only supports PHP 5.5. Currently, and for most purposes (especially for new projects), PHP 7

Wait, this PHP-GTK thing is abandonware! Last release in 2008, and only supports PHP 5.5. Currently, and for most purposes (especially for new projects), PHP 7 is already being considered old... the amount of work that went into PHP 8 vs. PHP 5 is simply staggering. PHP 5.5 is just too old to develop against! The same applies to https://php-qt.org/ https://php-qt.org/ which "gives you" Qt 4 on PHP 5.1. Fortunately enough, for those seeking a GUI toolkit for PHP, there's also WxPHP [1]: https://github.com/wxphp/wxphp https://github.com/wxphp/wxphp [1] EDIT: WxPHP is being actively developed to support PHP 7 and 8 (there are no builds available yet)