I have table like this :

+---------+----------+--------------+-----+        | Childid | parentId | refGParentId | Name| +---------+----------+--------------+------ |     1   |         0|            0 |    a| |     2   |         1|            1 |    b| |     3   |         1|            1 |    c| |     4   |         2|            1 |   b1| |     5   |         2|            1 |   b2| |     6   |         3|            1 |   c1| |     7   |         3|            1 |   c2| |     8   |         4|            2 |   x | |     9   |         4|            2 |   x | |     10  |         5|            2 |   y | |     11  |         5|            2 |   y | |     12  |         7|            3 |   w | |     13  |         7|            3 |   w | +------+----------+--------------+--------+ 

And I want like this structure format (Tree format) in php & mysql..