function __isset($name)
{
if (strncmp($name, 'param_', 6) == 0) {
$paramname = substr($name, 6);
$params = unserialize($this->params);
return isset($params[$paramname]);
} else {
return parent::__isset($name);
}
}
/**
* Magic set method to check if a custom field is set. See __get.
*/
public function __isset($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])) {
// we have a custom field of the same name
if (isset($this->_field_data[$shortname])) {
// we have data
return true;
} else {
if (!$this->_fields_loaded && empty($this->_field_changed[$shortname])) {
// custom fields haven't been loaded yet (and the field
// hasn't been unset)
$this->_load_field_data();
return isset($this->_field_data[$shortname]);
}
}
return false;
}
}
return parent::__isset($name);
}
