[Solved] How to sort multidimensional array in PHP version 5.4 – with keys?

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An quick fix, using the previous numerically ordered array, could have been:

// Save the keys
$keys = array_shift($data);

/* here, do the sorting ... */

// Then apply the keys to your ordered array
$data = array_map(function ($item) {
    global $keys;
    return array_combine($keys, $item);
}, $data);

But let’s update my previous function:

function mult_usort_assoc(&$arr, $max_index = false, $index = false) {

    function mult_usort_callback($a, $b, $max_index, $index) {
        $max_index = $max_index ?: key(end($a));    // If not provided, takes last key
        $index     = $index ?: array_keys($a)[0];   // If not provided, takes first key

        // When data are equal, sort by next key only if not after the $max_index
        if ($a[$index] == $b[$index]) {
            $next = array_keys($a)[array_search($index,array_keys($a))+1];
            if ($index !== $max_index && !is_null($next)) {
                return mult_usort_callback($a, $b, $max_index, $next);
            } else {
                return 0;
            }
        }
        return $a[$index] > $b[$index] ? 1 : -1;
    }

    /* This part have been improved as we shouldn't use create_function()
       This function is now usable in PHP 7.2 */
    usort($arr, function ($a, $b) use ($max_index, $index) {
        return mult_usort_callback($a, $b, $max_index, $index);
    });
}

Usage and output:

mult_usort_assoc($data, 'Site');
echo '<pre>' . print_r($data, true) . '</pre>';

Used functions in this answer:

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solved How to sort multidimensional array in PHP version 5.4 – with keys?