Php Tree Change Parent Structure

I want to change structure of parent other way like Wordpress and add class if is parent. Current Structure:

• My List

  Solution 1:

  Try this code, not ideal, but it works

  $items = [
      1 => [
          'name' => 'Menu 1',
          'children' => [2,4],
          'isChild' => false
      ],
      2 => [
          'name' => 'Menu 2',
          'children' => [3],
          'isChild' => true
      ],
      3 => [
          'name' => 'Menu 3',
          'children' => [],
          'isChild' => true
      ],
      4 => [
          'name' => 'Menu 4',
          'children' => [],
          'isChild' => true
      ],
      5 => [
          'name' => 'Menu 5',
          'children' => [],
          'isChild' => false
      ]
  ];
  
  
  
  $html = '<ul>Menu list';
  foreach($itemsas$key => $item) {
      $html .= buildMenu($item, $items);
  }
  $html .= '</ul>';
  
  echo$html;
  
  functionbuildMenu($item, $items, $listAsParent = true) {
          if($listAsParent && $item['isChild']) {
              return;
          }
          $html = '<li>'.$item['name'];
          if(count($item['children']) != 0) {
              $html .= '<ul class="sub-menu">';
              foreach($item['children'] as$child) {
                  $html .= buildMenu($items[$child], $items, false);
              }
              $html .= '</ul>';
          }
          $html .= '</li>';
      return$html;
  }
  

  Solution 2:

  You can do that with a minor change to the function to track the menu level:

  functionmake_list($lists, $parent = 0, $level = 0) {
      $children = array_filter($lists[0], function ($v) use($parent) { return$v['parent'] == $parent; });
      if (!count($children)) return;
      echo"<ul" . ($level > 0 ? ' class="sub-menu"' : '') . ">\n";
      foreach ($childrenas$child) {
          echo"<li>{$child['name']}</li>\n";
          make_list($lists, $child['id'], ++$level);
      }
      echo"</ul>\n";
  }
  make_list($lists);
  

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