XDB::query('INSERT INTO watch_sub SELECT {?},id FROM watch_cat WHERE id={?}', $this->_uid, $key);
if(mysql_affected_rows()) {
$this->_data[$key] = $key;
XDB::query('INSERT INTO watch_sub SELECT {?},id FROM watch_cat WHERE id={?}', $this->_uid, $key);
if(mysql_affected_rows()) {
$this->_data[$key] = $key;