TYPO3 Core

// sorting might have changed due to workspace overlay

uasort(

$itemList,

function (FileReference $a, FileReference $b) {

$sortA = $a->getReferenceProperty('sorting_foreign');

$sortB = $b->getReferenceProperty('sorting_foreign');

if ($sortA == $sortB) {

return 0;

}

return ($sortA < $sortB) ? -1 : 1;

}

);