Added __isset method for checking if variable is stored in session, example: 
Added __isset method for checking if variable is stored in session, example: 

if (isset($this->session->name)) {
}

git-svn-id: cc6bf778016782145e08f50c22fd3532de014314@240 eaaf3d48-7251-11de-8585-3f51e31374b7

darkredz/DooPHP,darkredz/DooPHP