Session.php

<?php
namespace BlueSeed;

/**
 *
 * This classe use Session to store and recovery data  ...
 * @author ivonascimento <ivo@o8o.com.br>
 * @license   http://www.opensource.org/licenses/bsd-license.php BSD
 * @package system
 *
 *
 */
class Session{
    /**
     *
     * start a session
     * @access public
     * @return void
     */
    public static function start(){
        session_start();
    }
    /**
     *
     * Destroy a session
     * @access public
     * @return void
     */
    public static function destroy(){
        session_destroy();
    }
    /**
     *
     * Save data without serialize it.
     * can be object with resources you can serialize, scalars or Array
     * @param string $name
     * @param string $value
     * @return void
     */
    public static function setVar($name, $value){
        $_SESSION[$name]     =     $value;
    }
    /**
     *
     * retrieve a value saved with setVar ...
     * @see setVar
     * @param string $name
     * @return mixed
     */
    public static function getVar($name){
        if (array_key_exists($name, $_SESSION)) {
            return $_SESSION[$name];
        }
        return null;
    }
    public function unsetVar($name)
    {
         if (array_key_exists($name, $_SESSION)) {
            unset($_SESSION[$name]);
        }
        return null;
        
    }
    /**
     * retrieve a mixed saved with setObject
     * @see setObject
     * @param string $name
     * @return mixed
     */
    public static function getObject($name){
        if ( isset( $_SESSION['objects'][$name] ) ){
            return unserialize($_SESSION['objects'][$name]);
        }
        return NULL;
    }
    /**
     * Save data with serializing it
     * @param string $name
     * @param mixed  $value
     * @return void
     */
    public static function setObject($name, $value){
        $_SESSION['objects'][$name]        =     serialize($value);
    }
}