PHP GUI

Build native desktop apps with PHP — no Electron, no web server, no compromises.

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demo-video.mp4

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PHP GUI gives you two ways to build desktop applications from the same PHP codebase:

Mode	Best for	Engine
Native Widgets	System-style UIs — forms, dialogs, tools	Tcl/Tk via FFI
WebView	Modern UIs with HTML/CSS/JS (like Tauri, but PHP)	WebKitGTK / WKWebView / WebView2

Both modes work on Linux, macOS, and Windows with zero system dependencies on Linux — libraries are bundled.

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Requirements

	Minimum
PHP	8.1+
Extension	ext-ffi enabled (ffi.enable=true in php.ini)
Composer	any recent version

Linux — no extra packages needed (Tcl/Tk is bundled).
macOS — no extra packages needed.
Windows — no extra packages needed.

Enable FFI if not already on:

; php.ini
extension=ffi
ffi.enable=true

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Installation

composer require developersharif/php-gui

That's it. No system Tcl/Tk install, no native build steps.

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Quick Start

Create app.php:

<?php
require_once __DIR__ . '/vendor/autoload.php';

use PhpGui\Application;
use PhpGui\Widget\Window;
use PhpGui\Widget\Label;
use PhpGui\Widget\Button;

$app    = new Application();
$window = new Window(['title' => 'Hello PHP GUI', 'width' => 400, 'height' => 250]);

$label = new Label($window->getId(), ['text' => 'Hello, World!']);
$label->pack(['pady' => 20]);

$button = new Button($window->getId(), [
    'text'    => 'Click Me',
    'command' => fn() => $label->setText('You clicked it!'),
]);
$button->pack();

$app->run();

php app.php

A native window opens immediately. No compilation, no manifest files, no packaging step.

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Native Widgets

Native widgets render as real OS controls using Tcl/Tk under the hood. The PHP API is simple and consistent across all platforms.

Available Widgets

Widget	Description	Docs
Window	Main application window	→
TopLevel	Secondary window / dialog launcher	→
Label	Static or dynamic text display	→
Button	Clickable button with callback	→
Input / Entry	Single-line text field	→
Checkbutton	Checkbox with on/off state	→
Combobox	Dropdown selection	→
Frame	Container for grouping widgets	→
Menu	Menu bar with submenus and commands	→
Menubutton	Standalone menu button	→
Canvas	Drawing surface for shapes and images	→
Message	Multi-line text display	→
Image	Display images inside windows	—

Layout

Every widget supports three layout managers. Mix them freely within a window.

// Pack — flow layout (simplest)
$widget->pack(['side' => 'top', 'pady' => 10, 'fill' => 'x']);

// Grid — row/column table
$label->grid(['row' => 0, 'column' => 0, 'sticky' => 'w']);
$input->grid(['row' => 0, 'column' => 1]);

// Place — absolute position
$badge->place(['x' => 20, 'y' => 20]);

Styling

Pass Tcl/Tk options directly in the constructor array or update them at runtime:

$button = new Button($window->getId(), [
    'text'   => 'Save',
    'bg'     => '#4CAF50',
    'fg'     => 'white',
    'font'   => 'Helvetica 14 bold',
    'relief' => 'raised',
    'padx'   => 12,
    'pady'   => 6,
]);

// Update at runtime
$button->setBackground('#2196F3');
$label->setText('Saved!');

Common options: bg, fg, font, relief (flat raised sunken groove ridge), padx, pady, width, height, cursor.

Dialogs

TopLevel provides native system dialogs — no extra packages:

// File picker
$file = TopLevel::getOpenFile();

// Directory picker
$dir = TopLevel::chooseDirectory();

// Color picker
$color = TopLevel::chooseColor();

// Message box — returns 'ok', 'cancel', 'yes', 'no'
$result = TopLevel::messageBox('Are you sure?', 'yesno');

Menus

$menu     = new Menu($window->getId(), ['type' => 'main']);
$fileMenu = $menu->addSubmenu('File');

$fileMenu->addCommand('New',  fn() => newFile());
$fileMenu->addCommand('Open', fn() => openFile());
$fileMenu->addSeparator();
$fileMenu->addCommand('Exit', fn() => exit(), ['foreground' => 'red']);

$editMenu = $menu->addSubmenu('Edit');
$editMenu->addCommand('Copy',  fn() => copy());
$editMenu->addCommand('Paste', fn() => paste());

Complete Example

<?php
require_once __DIR__ . '/vendor/autoload.php';

use PhpGui\Application;
use PhpGui\Widget\{Window, Label, Button, Input, Menu, TopLevel};

$app    = new Application();
$window = new Window(['title' => 'Demo', 'width' => 500, 'height' => 400]);

// Menu bar
$menu     = new Menu($window->getId(), ['type' => 'main']);
$fileMenu = $menu->addSubmenu('File');
$fileMenu->addCommand('Open', function () use (&$status) {
    $file = TopLevel::getOpenFile();
    if ($file) $status->setText("Opened: " . basename($file));
});
$fileMenu->addSeparator();
$fileMenu->addCommand('Exit', fn() => exit());

// Input + button
$input = new Input($window->getId(), ['text' => 'Type something...']);
$input->pack(['pady' => 10, 'padx' => 20, 'fill' => 'x']);

$status = new Label($window->getId(), ['text' => 'Ready', 'fg' => '#666']);
$status->pack(['pady' => 5]);

$btn = new Button($window->getId(), [
    'text'    => 'Submit',
    'bg'      => '#2196F3',
    'fg'      => 'white',
    'command' => function () use ($input, $status) {
        $status->setText('You typed: ' . $input->getValue());
    },
]);
$btn->pack(['pady' => 10]);

$app->run();

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WebView Mode

WebView lets you build the UI with HTML, CSS, and JavaScript while keeping all your business logic in PHP. Think of it as Tauri for PHP.

<?php
require_once __DIR__ . '/vendor/autoload.php';

use PhpGui\Application;
use PhpGui\Widget\WebView;

$app = new Application();
$wv  = new WebView(['title' => 'My App', 'width' => 900, 'height' => 600]);

$wv->setHtml('<h1 style="font-family:sans-serif">Hello from PHP + HTML!</h1>');

$wv->onClose(fn() => $app->quit());
$app->addWebView($wv);
$app->run();

PHP ↔ JavaScript Bridge

JS → PHP — call PHP functions from the browser:

// PHP: register a handler
$wv->bind('getUser', function (string $reqId, string $args) use ($wv): void {
    $id   = json_decode($args, true)[0];
    $user = getUserFromDatabase($id);
    $wv->returnValue($reqId, 0, json_encode($user));
});

// JavaScript: call it like a local function
const user = await invoke('getUser', 42);
console.log(user.name);

PHP → JS — push events to the frontend:

// PHP: emit an event
$wv->emit('orderUpdated', ['id' => 99, 'status' => 'shipped']);

// JavaScript: listen for it
onPhpEvent('orderUpdated', (order) => {
    document.getElementById('status').textContent = order.status;
});

Serving a Frontend App

Load a built frontend (React, Vue, Svelte, Vanilla — anything) directly from disk. No HTTP server, no open ports, no firewall prompts:

$wv->serveFromDisk(__DIR__ . '/frontend/dist');

Platform	Mechanism	URL
Linux	phpgui:// custom URI scheme	phpgui://app/index.html
Windows	WebView2 virtual hostname	https://phpgui.localhost/
macOS	loadFileURL:allowingReadAccess:	file:///path/to/dist/

Vite Dev + Production in One Line

serveVite() auto-detects whether the dev server is running:

// In dev: hot-reloads via the Vite dev server (HMR works)
// In prod: loads dist/ from disk — no server needed
$wv->serveVite(__DIR__ . '/frontend/dist');

Recommended vite.config.js for cross-platform builds:

export default {
  base: './',        // required for macOS file:// serving
  build: { outDir: 'dist' },
}

Bypass CORS — Transparent Fetch Proxy

Cross-origin API calls fail from phpgui:// / file:// origins. One call routes all fetch() requests through PHP:

$wv->enableFetchProxy();  // add this before serveFromDisk() / serveVite()

// Works identically on all platforms, no changes to your frontend code
const data = await fetch('https://api.example.com/data').then(r => r.json());

Full Vite App Example

<?php
require_once __DIR__ . '/vendor/autoload.php';

use PhpGui\Application;
use PhpGui\Widget\WebView;

$app = new Application();
$wv  = new WebView(['title' => 'My Vite App', 'width' => 1024, 'height' => 768]);

$wv->enableFetchProxy();
$wv->serveVite(__DIR__ . '/frontend/dist');

// Expose a PHP function to JavaScript
$wv->bind('readFile', function (string $reqId, string $args) use ($wv): void {
    $path    = json_decode($args, true)[0];
    $content = is_file($path) ? file_get_contents($path) : null;
    $wv->returnValue($reqId, 0, json_encode($content));
});

$wv->onClose(fn() => $app->quit());
$app->addWebView($wv);
$app->run();

See the full WebView documentation →

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Platform Support

Platform	Native Widgets	WebView	Notes
Linux (x86-64)	✅	✅	Tcl/Tk bundled. WebView needs libwebkit2gtk-4.1-dev
Linux (ARM64)	✅	—	Tcl/Tk bundled
macOS	✅	✅	No extra dependencies
Windows	✅	✅	No extra dependencies

Linux WebView dependency:

sudo apt install libwebkit2gtk-4.1-dev   # Debian / Ubuntu
sudo dnf install webkit2gtk4.1-devel     # Fedora / RHEL

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Documentation

Guide
Getting Started	FFI setup, first app, layout, events
Architecture	How the FFI bridge and event loop work
WebView	Full WebView API reference

Widget reference: Window · Button · Label · Input · Entry · Checkbutton · Combobox · Frame · Canvas · Menu · Menubutton · TopLevel · Message

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License

MIT