BuildTree.php

<?php

/*
* Roni Pinili 
* 12/17/2017
* Laravel treebuilding (Parent - Child Collection)
  Params child collection, parent collection
*/


/*
* Branch Elements
* Params child collection, Parent ID
*/
function buildBranch($branchElements, $parentId) 
{

    $branch = array();

    foreach ($branchElements as $branchElement) {
        
        if ($branchElement['parent_id'] == $parentId) {
            
            $children = buildBranch($branchElements,'');
            
            if ($children) {
                
                $branchElement['children'] = $children;

            }
            $branch[] = $branchElement;
        }
    }

    return $branch;
}


/*
* Tree Elements
* Params Parent collection, child collection
*/
function buildTree($treeElement, $branchElement)
{
    $tree = array();

    foreach ($treeElement as $parentCategory) {
        
        array_push($tree, array("parent"=> $parentCategory->name,'children'=>buildBranch($branchElement, $parentCategory->id)));
    }

    return $tree;
}