Our sample application is the following:
例 3.4. Basic sample application
<?php
if( !extension_loaded('gtk')) {
dl( 'php_gtk.' . PHP_SHLIB_SUFFIX);
}
$window = &new GtkWindow();
$window->set_default_size( 300, 200);
$window->set_title( 'window title');
$vbox = &new GtkVBox();
$label = &new GtkLabel( 'Translation test');
$button = &new GtkButton( 'Close window');
$vbox->pack_start( $label);
$vbox->pack_start( $button);
$window->connect_object('destroy', array('gtk', 'main_quit'));
$button->connect_object( 'clicked', array( 'gtk', 'main_quit'));
$window->add( $vbox);
$window->show_all();
gtk::main();
?>
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We would like to have the "window title", "Translation test" and "Close window".
The first thing you need to do is loading the gettext extension,
the same way you load php-gtk. This can be done by doing a
if( !extension_loaded( 'gettext')) {
if( !@dl( 'php_gettext.' . PHP_SHLIB_SUFFIX)) {
die( 'gettext is not available');
}
}
The next step is to set the location of the translation file;
this can be done with
which would assume that the .mo file would be in
{CURRENT_DIR}/locale/{LANGUAGE}/LC_MESSAGES/testapp.mo.
Language could be de_DE, depending on your
system setting - this can be overridden with
bindtextdomain( 'testapp', './locale');
. You should always use the language identifier
together with the country code as there have been problems
on some systems when using only de or
DE.
The {CURRENT_DIR} assumes that the application
is started with the working directory in the application directory;
but this can't always be expected. It would be better to do a
putenv( "LANG=" . 'de_DE'); //required on windows, because setlocale doesn't really work
setlocale( LC_ALL, 'de_DE');
which uses the real location of the current file as base.
bindtextdomain( 'testapp', dirname( __FILE __) . '/locale');
After setting the file location, you have to tell gettext
which "domain" (part of the translation files) you want to
use, in our case it would be "testapp":
This allows you to use multiple domains in the same program, and
you can switch between them everytime.
textdomain( 'testapp');
The translation of strings if an ease: There is the function gettext which takes a string as parameter and returns the translated version. To make the code more readable, there is an alias of the function: _ (underscore). Now we change our code and get the following:
例 3.5. Basic example with translation
<?php
if( !extension_loaded('gtk')) {
dl( 'php_gtk.' . PHP_SHLIB_SUFFIX);
}
putenv( "LANG=" . 'de_DE'); //required on windows, because setlocale doesn't really work
setlocale( LC_ALL, 'de_DE');
if( !function_exists( 'gettext')) {
//gettext not automatically loaded
if( !@dl( 'php_gettext.' . PHP_SHLIB_SUFFIX)) {
die( 'gettext extension is not available!');
}
}
bindtextdomain( 'testapp', dirname( __FILE__) . '/locale');
textdomain( 'testapp');
$window = &new GtkWindow();
$window->set_default_size( 300, 200);
$window->set_title( _('window title'));
$vbox = &new GtkVBox();
$label = &new GtkLabel( _('Translation test'));
$button = &new GtkButton( gettext('Close window'));
$vbox->pack_start( $label);
$vbox->pack_start( $button);
$window->connect_object('destroy', array('gtk', 'main_quit'));
$button->connect_object( 'clicked', array( 'gtk', 'main_quit'));
$window->add( $vbox);
$window->show_all();
gtk::main();
?>
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When you start your application, you will see nothing translated:
We forgot the translation file.
Just copy the following into
locale/de/LC_MESSAGES/testapp.po:
After doing this, compile it with
msgfmt testapp.po and
move the created messages.mo
to testapp.mo.
Start the application again - you will see
the app in the german language.
# PHP-Gtk translation tutorial
# Copyright (C) 2004 PHP-Gtk documentation team
# Christian Weiske <cweiske@php.net>, 2004.
#
#, fuzzy
msgid ""
msgstr ""
"Project-Id-Version: 0.1N\n"
"POT-Creation-Date: 2004-09-15 07:12+0100\n"
"PO-Revision-Date: 2004-09-15 07:12+0100\n"
"Last-Translator: Christian Weiske <cweiske@php.net>\n"
"Language-Team: PHP-Gtk doc team germany <germany@example.com>\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=iso-8859-1\n"
"Content-Transfer-Encoding: 8bit\n"
#: gettext_example.php:20
msgid "window title"
msgstr "Fenstertitel"
msgid "Translation test"
msgstr "UEbersetzungstest"
msgid "Close window"
msgstr "Fenster schliessen"
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