The easy way for now could be use two queries:
- Select all menus which has parent_id=0
(SELECT * FROM tblmenu WHERE parentid=0) - Loop through the result and again select the menus having the parent_id=PARENT_MENU
(SELECT * FROM tblmenu WHERE parentid=parent_menu_id)
Hope you can manage the PHP code.
This is correct way.
looping while the condition matches in the parent list…