need help for creatinb binary tree in php

hi
i have problem reguarding creation of binary tree in php that fetches data from database
i'm working on mlm project, for that there is admin and he have left and right leg on level zero, on level one subordinate have root as admin in level zero and they have their subordinate. i created database which contains sponser_id, id(autoincreamented) name and left and right joinig represented by 1 for present and 0 for absent.
sponser_id if same as id then that name is of which id belongs is admin for othes two.
is that logic is correct. i can't create binary tree for that one
if any code u have ,plz help me out

pls help meh also in octal and hexa..