_ Zend_Db_Select::where()メソッドの$type trunkでは、 * @param string $cond The WHERE condition. * @param string $value OPTIONAL A single value to quote into the condition. * @param constant $type OPTIONAL The type of the given value * @return Zend_Db_Select This Zend_Db_Select object. */ public function where($cond, $value = null, $type = null) { if ((func_num_args() > 3) or (($type !== null) and ($type !