php class category { function getmaincatlist() { $q = "select * from category"; $db = new dboperation1(); $db->getconnection(); $rs = $db->selectquery($q); return $rs; } function returnmaincat($cid) { $q = "select * from category where cid='$cid'"; $db = new dboperation1(); $db->getconnection(); $rs = $db->selectquery($q); return $rs; } // Fixed: Safely closed the function } // Fixed: Safely closed the category class
Rotating vane air velocity meters measure the velocity of air passing through their blades. They feature a fan-like impeller that spins as air passes through it. This impeller must be aligned with the airflow being measured for accurate readings.