Category hierarchy from array(cat id => parent id)

Question

i am trying to create a multidimensional array hierarchy from a simple array which contains pairs of category ids and parent ids. The categories can be a parent and a subcategor

Answer 1

Get your list :

 0,
  2 => 1,
  3 => 2,
  4 => 0,
  5 => 4,
  6 => 0
);


$menus = array();

function generateMenus($start) {
    global $initialArray;
    foreach($initialArray as $k => $v) {
       if($start == $v) {
          $menus[] = $k;
       }
    }
    return $menus;
}
$final = array();
foreach($initialArray as $key => $value) {
   $final[$value] = generateMenus($value);
}

echo '
';
function generateList($start) {
    global $final;
    echo '
'.$start.'
';
    if(!empty($final[$start])) {
        echo '
';
        foreach($final[$start] as $v) {
            generateList($v);
        }
        echo '
';
    }
}
generateList(0);
echo '
';


?>