render arrays

sort_by_weight.php
// ...

$build['content_1'] = [
    '#markup' => "content 1",
    '#custom_weight_property' => 10,
];

$build['content_2'] = [
    '#markup' => "content 2",
    '#custom_weight_property' => 5,
];

usort($build, function ($a, $b) {
    return SortArray::sortByKeyInt($a, $b, '#custom_weight_property');
});

The output looks like this:

content 2
content 1

Just a hint:

The custom weight system controls the display order of elements, where lower weight values appear earlier, as shown in the example: content_2 (with weight 5) is rendered before content_1 (with weight 10).
 

23.04.2026 | Lothar Ferreira Neumann

Sort render array by custom weight property