Kohana config to file helper.

config.php

<?php defined('SYSPATH') or die('No direct script access.');
/**
 * Config transparently extended. Place in "classes" directory of Kohana 3+ application or module.
 * 
 * @author		Micheal Morgan <micheal@morgan.ly>
 * @copyright		(c) 2012-2013 Micheal Morgan
 * @license		MIT
 */
class Config extends Kohana_Config
{
	/**
	 * Write array to config file. If the file exists, it will be overwritten; otherwise, it will 
	 * be created including directories.
	 * 
	 * @see		https://github.com/morgan/kohana-storage
	 * @static
	 * @access	public
	 * @param	string	Name of file including path. Examples: "database", "path/to/config"
	 * @param	array	Configuration array
	 * @param	string	Root path to application or module
	 * @return	void
	 */
	public static function to_file($path, array $config, $root_path = APPPATH)
	{		
		// Generate file contents
		$contents = Kohana::FILE_SECURITY . "\n\n" . 'return ' . var_export($config, TRUE) . ';';		

		// Using Storage module to quickly write file (handling directory creation, etc)
   		$storage = new Storage_Connection_Local(array('root_path' => $root_path));

		// Write file
		$storage->set('config/' . $path . EXT, $contents);
	}
}