Skip to content


Returns a string describing the compile-time configuration.

function glfwGetVersionString() : string

This function returns the compile-time generated version string of the GLFW library binary. It describes the version, platform, compiler and any platform-specific compile-time options. It should not be confused with the OpenGL or OpenGL ES version string, queried with glGetString.

Do not use the version string to parse the GLFW library version. The glfwGetVersion function provides the version of the running library binary in numerical format.


string The ASCII encoded GLFW version string.


This documentation page is prased from the glfw3.h header file, and only modified to fit the PHP-GFLW extension bindings. The original documentation copyright is as follows:

Copyright (c) 2002-2006 Marcus Geelnard
Copyright (c) 2006-2019 Camilla Löwy