PHP-GTK, as can be guessed from the name, is the combination of our favourite programming language and the GTK+ GUI toolkit. GTK, incidentally, stands for GIMP Tool Kit, as it was originally developed for use in the GIMP software. Since its creation, GTK+ has come a long way and is now used as a central part of Gnome and has been ported to Windows.
This cross-platform ability works perfectly with PHP's cross-platform nature, and the end result is that, as long as care is taken, one can create attractive and powerful applications that run on a wide variety of machines.
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