echo json_encode($result); exit; case "getCategories": $result = DbManager::getCategories(); echo json_encode($result); exit; case "getSubCategory": $result = DbManager::getSubCategory($request->data); echo json_encode($result); exit; case "addSubCategory": $result = DbManager::addSubCategory($request->data); echo json_encode($result); exit; case "getSubCategories": $result = DbManager::getSubCategories(); echo json_encode($result); exit; case "editCategoryTitle": $result = DbManager::editCategoryTitle($request->data); echo json_encode($result); exit; case "deleteCategory": $result = DbManager::deleteCategory($request->data); echo json_encode($result); exit; case "deleteSubCategory": $result = DbManager::deleteSubCategory($request->data); echo json_encode($result); exit; case "editMiniProject":