dr_array_sort($arr, $key, $type = 'asc')

{php $mval = array_reverse($cat['year']);}  原来可以直接这样啊~~~

{php $mval = dr_array_sort($cat['timeline'], 1, 'desc');}{loop $mval $v}
<div class="timeline__item">
<div class="timeline__content">
<h2>{$v[1]}</h2>
<p>{$v[2]}</p>
</div>
</div>
{/loop}