PHP Binary Tree-like array, get all pathways -


i have array has binary structure (please check array data @ bottom). want find out pathways using item field of every node. below expected answer data @ bottom:

expected answer:

0,1,5,4
0,1,3,4
0,3,4

data: 

array (     [0] => array         (             [item] => null             [count] => 0             [child] => array                 (                     [1] => array                         (                             [item] => 1                             [count] => 6                             [child] => array                                 (                                     [5] => array                                         (                                             [item] => 5                                             [count] => 3                                             [child] => array                                                 (                                                     [4] => array                                                         (                                                             [item] => 4                                                             [count] => 1                                                             [child] =>                                                          )                                                  )                                          )                                      [3] => array                                         (                                             [item] => 3                                             [count] => 2                                             [child] => array                                                 (                                                     [4] => array                                                         (                                                             [item] => 4                                                             [count] => 1                                                             [child] =>                                                          )                                                  )                                          )                                  )                          )                      [3] => array                         (                             [item] => 3                             [count] => 1                             [child] => array                                 (                                     [4] => array                                         (                                             [item] => 4                                             [count] => 1                                             [child] =>                                          )                                  )                          )                  )          )  )


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