boa tarde, sou novo na area, instalei o php-gtk2 no fedora, tento rodar o aquivo:

<?php
$glade = new GladeXML('teste.glade');
$window1 = $glade -> get_widget('window1');
$btnSoma = $glade -> get_widget('button1');
$valor1 = $glade -> get_widget('spinbutton1');
$valor2 = $glade -> get_widget('spinbutton2');
$resultado = $glade -> get_widget('spinbutton3');

$btnSomar -> connect_simple('cliked', 'Somar', $valor1, $valor2, $resultado);
$window1 -> connect_simple('destroy', array('gtk', 'main_quit'));

function Somar($valor1, $valor2, $resultado){
$resultado -> set_text($valor1 -> get_text() + $valor2 -> get_text());
}

Gtk::main();
?>

mais ta dando o seguinte erro:

Gtk-Message: Failed to load module "pk-gtk-module"
Gtk-Message: Failed to load module "atk-bridge"

(somar.php:1807): libglade-WARNING **: Expected <glade-interface>. Got <interface>.

(somar.php:1807): libglade-WARNING **: did not finish in PARSER_FINISH state

Fatal error: Uncaught exception 'PhpGtkConstructException' with message 'could not construct GladeXML object' in /home/fabricio/Documentos/Calculadora/calculadora/Layout/somar.php:2
Stack trace:
#0 /home/fabricio/Documentos/Calculadora/calculadora/Layout/somar.php(2): GladeXML->__construct('teste.glade')
#1 {main}
thrown in /home/fabricio/Documentos/Calculadora/calculadora/Layout/somar.php on line 2