php从嵌套的多维数组中删除重复项

function removeDuplicates($array) {
    $result = array();
    foreach ($array as $key => $value) {
        if (!in_array($value, $result)) {
            if (is_array($value)) {
                $result[$key] = removeDuplicates($value);
            } else {
                $result[$key] = $value;
            }
        }
    }
    return $result;
}

// 示例用法
$array = array(
    "a" => array("b" => 1, "c" => 2),
    "d" => array("e" => 3, "f" => 4),
    "g" => array("h" => 1, "i" => 2)
);

$result = removeDuplicates($array);
print_r($result);