/* Gets the value of a key 
* 
* @param $name Name of the key
* @return Returns the value of a key or false of the key doesn`t exists
*/
static function get( $name )
{
$data = eZPersistentObject::fetchObject( eZSiteData::definition(), null, array( 
'name' => $name 
), true );
if ( $data instanceof eZPersistentObject )
{
return $data->attribute( 'value' );
}
else
{
return false;
}

}

/* Sets the value of a key
* @param $name Name of the key
* @param $value Value of the key
* @return True on success
*/
static function set( $name, $value )
{
$value = (string) $value;
$data = eZPersistentObject::fetchObject( eZSiteData::definition(), null, array( 
'name' => $name 
), true );
if ( ! $data instanceof eZPersistentObject )
{
$row = array( 
'name' => $name , 
'value' => $value 
);
$data = new eZSiteData( $row );
return $data->store();
}
elseif ( $data instanceof eZPersistentObject and $value !== $data->attribute( 'value' ) )
{
$data->setAttribute( 'value', $value );
return $data->store();
}
return true;
}