Composer is a super cool way to manage dependencies for your applications. Kohana’s autoloader does not support Composer’s way of autoloading, so if you’re wanting to use composer packages in your application you’re going to run into issues.
However, it’s really really simple to add support. Simply open your application/bootstrap.php file, and (I added this after Kohana registered its autoloader) add
Where, of course, [FULL_PATH_TO_COMPOSER_FOLDER] is the actual absolute path to Composer’s auto-generated auto-loader files.
Voila! You should now have Composer support in your Kohana app! :)