muzich/vendor/assetic/docs/en/build.md

Building and Dumping Assets

The is the simplest approach to using Assetic. It involves two steps:

1. Create a PHP script in your web directory that uses the Assetic OOP API to create and output an asset.
2. Reference that file from your template.

For example, you could create a file in your web directory at assets/javascripts.php with the following code:

use Assetic\Asset\AssetCollection;
use Assetic\Asset\FileAsset;
use Assetic\Filter\Yui\JsCompressorFilter as YuiCompressorFilter;

$js = new AssetCollection(array(
    new FileAsset(__DIR__.'/jquery.js'),
    new FileAsset(__DIR__.'/application.js'),
), array(
    new YuiCompressorFilter('/path/to/yuicompressor.jar'),
));

header('Content-Type: application/js');
echo $js->dump();

In your HTML template you would include this generated Javascript using a simple <script> tag:

<script src="/assets/javascripts.php"></script>

Next: Basic Concepts