[1] PHP-GTK was originally conceived by Andrei Zmievski, who is also actively involved in the development of PHP and the Zend Engine.

James Moore and Steph Fox were among the first to join in, contributing a great deal to PHP-GTK through their documentation efforts, and Frank Kromann, also from the PHP development team, supplied Windows binaries for the project.

More people began to get involved, and several extensions were contributed introducing new GUI widgets, such as Scintilla and GtkHTML.

[clarification needed] In 2008 PHP-GTK 2.0.0 was released to fully use PHP 5.2's powerful object model support, and to bring the improved portability of GTK 2.6, and its new set of widgets.

The sample PHP-GTK 2 program instantiates a GtkWindow widget with the title "Hello World!