Client-side Applications with PHP Andrei Zmievski & Frank M. Kromann Track: PHP Conference Date: Friday, July 27 Time: 3:45pm – 4:30pm Location: Fairbanks C&D

PHP a General Scripting Language HTML-embeded scripting language Cross platform Rich on functions and extensions Also used for shell scripts

Adding a GUI to PHP With a GUI it is possible to write client side applications and tools. PHP becomes event driven.

What is GTK GTK+ A multi platform toolkit for creating graphical user interfaces. Glib Provides useful data types, type convertsions, macros, string utilites etc. GDK A wrapper for low-level windowing functions. GTK An advanced widget set.

Automated code generation The source code for the php-gtk extension is generated from a set of definition files. 600 constant definitions 95 Objects 970 Methods

Web applications Request driven Procedural execution Tight integration with the web server

Event driven applications Setup main window Create functions Connect functions to events Start the main loop

Loading the extension PHP-GTK is not a built-in extension <?php // this file is used to make sure the gtk-extension is loaded. if (!extension_loaded("gtk")) { if (strtoupper(substr(PHP_OS, 0,3) == "WIN")) dl("php_gtk.dll"); else dl("php_gtk.so"); } ?>

Creating Gtk objects The syntax for creating an object is: –$window = &new GtkWindow(); With globals in functions use: –$GLOBALS[”window”] = &new GtkHBox()

Hello World #!/cygdrive/d/php4/php_win <?php require "gtk.inc"; $window_width = 500; $window_height = 200; $window_xpos = (Gdk::screen_width() - $window_width) / 2; $window_ypos = (Gdk::screen_height() - $window_height) / 2; $main_window = &new GtkWindow(); $main_window->connect('destroy', 'destroy'); $main_window->set_policy(TRUE, TRUE, FALSE); $main_window->set_title("Gtk+ Hello World"); $main_window->set_uposition($window_xpos, $window_ypos); $main_window->set_usize($window_width, $window_height); $main_window->show_all(); Gtk::main(); ?>

Add a close-button … $main_window->set_usize($window_width, $window_height); $close_button = &new GtkButton("Close"); $close_button->connect('clicked', 'destroy'); $close_button->show(); $main_window->add($close_button); $main_window->show_all(); …

Connecting Signals Signals are used to connect user actions and system events with php-functions. Examples: –’clicked’ signals on buttons. –’destroy’ signals on windows.

Callback function Names are case-insensitive Names are passed as strings (lowercase) The object emitting the signal is the first parameter, can be changed with the connect_object() method. Additional parameters can be added

Popup Messagebox() $main_window = &new GtkWindow(); $main_window->set_position(GTK_WIN_POS_CENTER); $main_window->connect('destroy', 'destroy'); $main_window->set_policy(TRUE, TRUE, FALSE); $main_window->set_title("Gtk+ Hello World"); $main_window->set_usize($window_width, $window_height); function Confirm_Quit($calling_button) { if (MessageBox("Do you realy want to quit ?", "System Message", MB_YES | MB_NO) == MB_YES) destroy(); } $close_button = &new GtkButton("Close"); $close_button->connect('clicked', 'confirm_quit'); $close_button->show(); $main_window->add($close_button); $main_window->show_all(); Gtk::main();

The gtk.php samplegtk.php Shows basic and advanced features How to use Gtk objects –GtkWindow, GtkButton, GtkClist –GtkCursor, GtkCtree, GtkEntry, GtkLabel –GtkPixmap, GtkRadioButton, GtkTooltips

Database Manager Manage local or remote DBMS View status of databases Start and stop databases Demo

DB Query Tool A simple SQL tool Executing SQL Statements Exporting data Cross platform Support for mulitple databases Demo

Related technologies libGlade …

Future Development Adding support for aditional functions Compiling php-gtk as a built-in ext. Documentation

More Information ticles/article-php-gtk.htmlhttp://josefine.ben.tuwien.ac.at/~mfischer/ar ticles/article-php-gtk.html