PHP Create a Multidimensional Array from an array with relational data [duplicate]

Answer 1

 &$m[$e[$k]]));
  }

  return $m[$r][0]; // remove [0] if there could be more than one root nodes
}

echo json_encode(makeRecursive(array(
  array('id' => 5273, 'parent' => 0,    'name' => 'John Doe'),  
  array('id' => 6032, 'parent' => 5273, 'name' => 'Sally Smith'),
  array('id' => 6034, 'parent' => 6032, 'name' => 'Mike Jones'),
  array('id' => 6035, 'parent' => 6034, 'name' => 'Jason Williams'),
  array('id' => 6036, 'parent' => 5273, 'name' => 'Sara Johnson'),
  array('id' => 6037, 'parent' => 5273, 'name' => 'Dave Wilson'),
  array('id' => 6038, 'parent' => 6037, 'name' => 'Amy Martin'),
)));

demo: https://3v4l.org/s2PNC