<?php
/**
 * HTTPRequest Class
 * @author R. Villar David <my@email.com>
 *
 * Encapsulate request data into the one object providing a
 * single channel for request data access and manipulation.
 *
 */
class HTTPRequest
{
	/**
	 * Holds collective request data
	 *
	 * @var array
	 */
	protected $_data = array();
	/**
	 * Holds data from the $_POST super global
	 *
	 * @var array
	 */
	protected $_post = array();
	/**
	 * Holds data from the $_GET super global
	 *
	 * @var array
	 */
	protected $_get = array();
	/**
	 * Holds data from the $_COOKIE super global
	 *
	 * @var array
	 */
	protected $_cookie = array();
	/**
	 * Constructor
	 * Stores "request data" in GPC order.
	 */
	public function __construct()
	{
		$this->_data = array_merge($this->_data, $_REQUEST);
		$this->_get = array_merge($this->_get, $_GET);
		$this->_post = array_merge($this->_post, $_POST);
		$this->_cookie = array_merge($this->_cookie, $_COOKIE);
		$this->_clean();
	}
	/**
	 * Store "request data" in GPC order.
	 *
	 * @param string $key
	 * @param mixed $value
	 */
	public function set($key, $value)
	{
		$this->_data[$key] = $value;
	}
	/**
	 * Read stored "request data" by referencing a key.
	 *
	 * @param string $key
	 * @return mixed
	 */
	public function get($key)
	{
		return isset($this->_data[$key]) ? $this->_data[$key] : null;
	}
	/**
	 * Allow access to data stored in GET, POST and COOKIE super globals.
	 *
	 * @param string $var
	 * @param string $key
	 * @return mixed
	 */
	public function getRawData($var, $key)
	{
		switch(strtolower($var)) {
			case 'get':
			$array = $this->_get;
			break;
			case 'post':
			$array = $this->_post;
			break;
			case 'cookie':
			$array = $this->_cookie;
			break;
			default:
			$array = array();
			break;
		}
		if(isset($array[$key])) {
			return $array[$key];
		}
		return null;
	}
	/**
	 * Internally clean request data by handling magic_quotes_gpc and then adding slashes.
	 *
	 */
	protected function _clean()
	{
		if(get_magic_quotes_gpc()) {
			$this->_data = $this->_stripSlashes($this->_data);
			$this->_post = $this->_stripSlashes($this->_post);
			$this->_get = $this->_stripSlashes($this->_get);
		}
	}
	/**
	 * Strip slashes code from php.net website.
	 *
	 * @param mixed $value
	 * @return array
	 */
	protected function _stripSlashes($value)
	{
	    if(is_array($value)) {
			return array_map(array($this,'_stripSlashes'), $value);
		} else {
			return stripslashes($value);
		}
	}
}