nestedNestedArray.php

<?php

$groupings = [
  [
    'Title' => 'Hoodies',
    'Class' => 'hoodies',
    'Items' => [
      [
        'Href' => 'foo.php',
        'Image' => 'img/myimage.jpg',
      ],
      [
        'Href' => 'foo2.php',
        'Image' => 'img/myimage2.jpg',
      ],
    ],
  ],
  [
    'Title' => 'Some Other Thing',
    'Class' => 'some-other-thing',
    'Items' => [
      [],
      [],
      [],
    ],
  ]
];