<?php
$menuler = array(
	array('id' => 1,  'parent_id' => 0, 'name' => 'Software developer'),
	array('id' => 2,  'parent_id' => 1, 'name' => 'Desktop app developer'),
	array('id' => 3,  'parent_id' => 1, 'name' => 'Mobil app developer'),
	array('id' => 4,  'parent_id' => 1, 'name' => 'Web app developer'),
	array('id' => 5,  'parent_id' => 4, 'name' => 'PHP'),
	array('id' => 6,  'parent_id' => 2, 'name' => 'C++'),
	array('id' => 7,  'parent_id' => 4, 'name' => 'Python'),
	array('id' => 8,  'parent_id' => 2, 'name' => 'Java SE'),
	array('id' => 9,  'parent_id' => 2, 'name' => 'C#'),
	array('id' => 10, 'parent_id' => 3, 'name' => 'Swift'),
	array('id' => 11, 'parent_id' => 3, 'name' => 'Java Android'),
);

function buildTree($menuler, $parentId = 0) {
$tree = $menuler();

foreach ($menuler as $element) {
if ($element[‘parent_id‘] == $parentId) {
$children = buildTree($menuler, $element[‘id‘]);
if ($children) {
$element[‘children‘] = $children;
}
$tree[] = $element;
}
}
return $tree;
}
$tree = buildTree($categories);
//------------------------
ini_set(‘xdebug.var_display_max_depth‘, ‘5‘); 
var_dump($tree[0]);

/*
Burada söylenmek İstenen  Aşagıdaki gibi bir şemadır.

Üst Menü
Software developer
	Desktop app developer
		C++
		Java SE
		C#
	Mobil app developer
		Swift
		Java Android
	Web app developer
		PHP
		Python
*/				
?>