/**
* Magic unset function for parameter values
*/
public function __unset($name)
{
if (strncmp($name, 'param_', 6) == 0) {
$paramname = substr($name, 6);
$params = unserialize($this->params);
unset($params[$paramname]);
$this->params = serialize($params);
} else {
return parent::__unset($name);
}
}
/**
* Magic set method to unset the value of a custom field. See __get.
*/
public function __unset($name)
{
$prefix_len = strlen(self::CUSTOM_FIELD_PREFIX);
if (strncmp($name, self::CUSTOM_FIELD_PREFIX, $prefix_len) == 0) {
$this->_load_fields();
$shortname = substr($name, $prefix_len);
if (isset(self::$_fields[$this->get_field_context_level()][$shortname])) {
unset($this->_field_data[$shortname]);
}
$this->_field_changed[$shortname] = true;
return;
}
return parent::__unset($name);
}