Editing PHP-GTK (section)

== Example ==
[[File:Hello World PHP-GTK.png|Hello World PHP-GTK|right]]
<syntaxhighlight lang="php">
<?php

function pressed()
{
    echo "Hello again - The button was pressed!\n";
}

$window = new GtkWindow();
$button = new GtkButton('Click');
$button1 = new GtkButton('Click');

$window->set_title('Hello World!');
$window->connect_simple('destroy', array('Gtk', 'main_quit'));
$button->connect_simple('clicked', 'pressed');
$button1->connect_simple('clicked', 'pressed');
$window->add($button);
$window->show_all();

Gtk::main();
</syntaxhighlight>

The sample PHP-GTK 2 program instantiates a <code>GtkWindow</code> widget with the title "Hello World!", containing a <code>GtkButton</code> labelled "Click Me." When the button is pressed, the message "Hello again - The button was pressed!" is displayed on the console via the [[Callback (computer programming)|callback]] <code>pressed</code>.