takes in simple array to generate hierarchical nested array #tree #graph

simple_to_nestedarray.php

<?php 
function hierarchical_array_from_array($farray){
foreach ($flatArray as $key=>$flat) {
$nodes = array();
$tree = array();
foreach ($flatArray as $key=>&$node) {
$node["Children"] = array();
$id = $node["@id"];
$parent_id = $node["@parentId"];
$nodes[$id] =& $node;
if (array_key_exists($parent_id, $nodes)) {
$nodes[$parent_id]["Children"][] =& $node
} else {
$tree[] =& $node;
}
}
return $tree;
}

tree #graph