[PHP5] GESTIONNAIRE DE CONFIGURATIONS

<?php

/**
 * Project : Configuration File Reader
 * File    : Config.class.php
 *
 * @author Neige < neige at orphyx dot net >
 * @copyright © 2007 - Neige
 * @package Configuration File Reader
 * @version 1.0.0
 * @link http://www.orphyx.net
 * @licence http://creativecommons.org/licenses/by-nc-sa/2.0/fr/
 */

/**
 * @package Configuration File Reader
 */
abstract class Config
{
	/**
	 * Configuration Items
	 * @var array
	 */
	protected $_ConfigItems = array();
	
	/**
	 * Read configuration file and store items
	 * @param string $file
	 */
	abstract protected function _load($file);
	
	/**
	 * Factory : build the required object
	 * @param string $file File to load
	 * @param string $type Required class type
	 * @return object
	 */
	public static function getConfig($file, $type)
	{
		$classReq = 'Config_' . $type;
		if(class_exists($classReq))
		{
			return new $classReq($file);
		}
		else
		{
			throw new Exception('CLASS_NOT_FOUND');
		}
	}
	/**
	 * Class constructor
	 * Load configuration file
	 * @param string $file
	 */
	public function __construct($file)
	{
		$this -> _load($file);
	}
	
	/**
	 * Configuration items getter
	 * @param string $var
	 * @return string
	 */
	public final function __get($var)
	{
		if (array_key_exists($var, $this -> _ConfigItems))
		{
			return $this -> _ConfigItems[$var];
		}
		else
		{
			return FALSE;
		}
	}
	
	/**
	 * Configuration items setter
	 * @param string $var
	 * @param mixed $value
	 */
	public final function __set($var, $value)
	{
		$this -> _ConfigItems[$var] = $value;
	}
	
}

?>

<?php

/**
 * Project : Configuration File Reader
 * File    : Config_MySQL.class.php
 *
 * @author Neige < neige at orphyx dot net >
 * @copyright © 2007 - Neige
 * @package Configuration File Reader
 * @version 1.0.0
 * @link http://www.orphyx.net
 * @licence http://creativecommons.org/licenses/by-nc-sa/2.0/fr/
 */

/**
 * @package Configuration File Reader
 */
class Config_MySQL extends Config
{
	/**
	 * Fetch configuration table content
	 * Requires a MySQL connection to exist
	 * @param string $file The table name
	 */
	protected function _load($file)
	{
		if (!mysql_ping())
		{
			throw new Exception('NO_MYSQL_CONNECTION_FOUND');
		}
		$result = mysql_query('SELECT * FROM ' . $file);
		while ($item = mysql_fetch_row($result))
		{
			$this -> _ConfigItems[$item[0]] = $item[1];
		}
		mysql_free_result($result);
	}
}

?>

<?php

/**
 * Project : Configuration File Reader
 * File    : Config_SimpleXML.class.php
 *
 * @author Neige < neige at orphyx dot net >
 * @copyright © 2007 - Neige
 * @package Configuration File Reader
 * @version 1.0.0
 * @link http://www.orphyx.net
 * @licence http://creativecommons.org/licenses/by-nc-sa/2.0/fr/
 */


/**
 * @package Configuration File Reader
 */
class Config_SimpleXML extends Config
{
	/**
	 * Read Configuration file using SimpleXMLElement
	 * @param string $file
	 */
	protected function _load($file)
	{
		if (is_file($file))
		{
			$xml = simplexml_load_file($file);
		}
		else
		{
			throw new Exception('FILE_NOT_FOUND');
		}
		
		foreach ($xml as $item)
		{
			$this -> _ConfigItems[(string) $item -> name] = (string) $item -> value;
		}
		
		unset($xml);
	}
}

?>