Сергей Яковлев

uasort(
    $array,
    fn($item1, $item2) => ($item1['count'] ?? 0) <=> ($item2['count'] ?? 0)
);

$dataIn = 'Laldldlldlsdls.... Ends Jul 2, 2021';
$dataOut = preg_replace_callback(
    '/Ends (.+)/',
    fn($matches) => date('F d, Y', strtotime($matches[1])),
    $dataIn
);