echo json_encode(array('valid' => $isAvailable)); exit; } switch ($_POST['type']) { case 'email': if ($user->check_email($_POST['email'])) { $isAvailable = true; } break; case 'phone': if ($user->check_phone($_POST['phone'])) { $isAvailable = true; } break; case 'vendor_email': if ($vendor->check_email($_POST['email'])) { $isAvailable = true; } break; case 'delete_item': if ($item->delete($_POST['object_id'])) { $isAvailable = true; } break; case 'delete_user': if ($user->delete($_POST['object_id'])) { $isAvailable = true; } break; case 'delete_vendor': if ($vendor->delete($_POST['object_id'])) {