Fatal error: main() [<a href='function.main'>function.main</a>]: The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition &quot;Login&quot; of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide a __autoload() function to load the class definition in C:\Documents and Settings\Administrador\Mis documentos\wwwroot\web\Index.php on line 33

if(isset($_SESSION['login'])){
   $logins=$_SESSION['login'];
   echo $logins->getId();(linea 33)
}

public function getId(){
   return $this->id;
}

of the object you are trying to operate on was loaded _before_ unserialize()