Asset management for PHP. This package is a fork of Aura.Asset_Bundle.



If you are not familiar with both, choose http-interop/http-factory-diactoros


composer require hkt/psr7-asset http-interop/http-factory-diactoros


Build Status

composer install

PSR Compliance

This attempts to comply with PSR-1, PSR-2, PSR-4, PSR-7, the proposed PSR-15 and PSR-17. If you notice compliance oversights, please send a patch via pull request.

Structure of Package

Assume you have a Vendor.Package. Your assets can be any where. Consider it is in the public folder. The folder names css, images, js can be according to your preffered name.

├── src
│   ├── Cli
│   └── Web
├── tests
└── public
    ├── css
    │   └── some.css
    ├── images
    │   ├── another.jpg
    │   └── some.png
    └── js
        └── hello.js

Assuming you have the same structure, now in your template you can point to /asset/vendor/package/css/some.css, /asset/vendor/package/js/hello.js, /asset/vendor/package/images/another.jpg.


The library can be used with any framework. So it makes use of preg_match under the hood. The default regular expression is /\/asset\/([a-zA-Z0-9-_]+)\/([a-zA-Z0-9-_]+)\/(.*)/ .

You can modify the regular expression by intantiating a Router object and passing it as 3rd argument to AssetAction

$router = new Hkt\Psr7Asset\Router('your-regx');
// ... more code
$assetAction = new Hkt\Psr7Asset\AssetAction($service, $responder, $router);

Zend Expressive

If you are using `zend expressive you can configure,


$route = new \Zend\Expressive\Router\Route('/asset/{vendor}/{package}/{file}', 'Hkt\Psr7Asset\AssetAction', ['GET'], 'hkt/psr7-asset:route');
    'tokens' => [
        'file' => '(.*)'


$router->addRoute(new \Zend\Expressive\Router\Route('/asset/{vendor}/{package}/{file:.*}', 'Hkt\Psr7Asset\AssetAction', ['GET'], 'hkt/psr7-asset:route'));

NB : Make sure you have set the service Hkt\Psr7Asset\AssetAction to the Di container.

From your view you can use as

$this->url('hkt/psr7-asset:route', [
    'vendor' => 'vendor',
    'package' => 'package',
    'file' => '/css/bootstrap.min.css'

This will return /asset/vendor/package/css/bootstrap.min.css.


With the help of mapping the vendor/package or directly the path you can alter the result it returns.

Overriding css, js, images

Like puli it is possible that you can override the style sheet, images, js etc for the downloaded package. You just need to map it. No magic under the hood.


The asset files are served by PHP. There is an experimental repo that can do caching. So files can be served by the web server itself.

Configuration via Aura.Di

Pass Hkt\Psr7Asset\Container\AssetConfig to your Container Builder. Don't forget to set the service Interop\Http\Factory\ResponseFactoryInterface as below.

namespace Vendor\Package;

use Aura\Di\Container;
use Aura\Di\ContainerConfigInterface;

class AppConfig implements ContainerConfigInterface
    public function define(Container $di)
        // add one of the http-interop/http-factory library
        $di->set('Interop\Http\Factory\ResponseFactoryInterface', $di->lazyNew('Http\Factory\Diactoros\ResponseFactory'));

    public function modify(Container $di)
        // Map more paths and location as above.
        $assetLocator = $di->get('Hkt\Psr7Asset\AssetLocator');
        // path to exact location
        $assetLocator->set('vendor/package/css/hello.css', '/path/to/web/css/test.css');
        // path to folder
        $assetLocator->set('vendor/package', dirname(dirname(__DIR__)) . '/public');