PHP重新格式化内容数组并计算相同的值

$contentArray = array("apple", "banana", "apple", "orange", "banana", "grape");

$counts = array_count_values($contentArray);

$formattedArray = array_map(function($key, $value) {
    return array("value" => $key, "count" => $value);
}, array_keys($counts), $counts);

usort($formattedArray, function($a, $b) {
    return $b["count"] - $a["count"];
});

$contentArray = array("apple", "banana", "apple", "orange", "banana", "grape");
$counts = array_count_values($contentArray);
$formattedArray = array_map(function($key, $value) {
    return array("value" => $key, "count" => $value);
}, array_keys($counts), $counts);
usort($formattedArray, function($a, $b) {
    return $b["count"] - $a["count"];
});

print_r($formattedArray);

Array
(
    [0] => Array
        (
            [value] => apple
            [count] => 2
        )

    [1] => Array
        (
            [value] => banana
            [count] => 2
        )

    [2] => Array
        (
            [value] => orange
            [count] => 1
        )

    [3] => Array
        (
            [value] => grape
            [count] => 1
        )

)