public function user_has(string $id_option, string $id_user): bool
  {
    return (bool)$this->_retrieve_ids($id_option, $id_user);
  }
public function user_has(string $id_option, string $id_user): bool
  {
    return (bool)$this->_retrieve_ids($id_option, $id_user);
  }
public function user_has ( string $ id_option , string $ id_user ) : bool { return ( bool ) $ this -> _retrieve_ids ( $ id_option , $ id_user ) ; }
Checks if a user has the given preference

@param string $id_option
@param string $id_user
@return bool
Checks if a user has the given preference