If you feel like writing 2D or 3D games in PHP...

[szabesz]

2D or 3D in PHP?

PHP-GLFW (https://phpgl.net/)
GameDev and Real-Time Applications in PHP

3D example: https://phpgl.net/examples/opengl/10-sponza.html

Cross-Platform
PHP-GFLW works on Window, MacOS and Linux. We also support standalone & portable binaries for MacOS and Windows.