如何使用PHP脚本和WooCommerce REST-API来更新我的订单

Question

I am searching to run WooCommerce REST API with an Update. Its not a big issue to get data as json: https://www.example.com/wp-json/wc/v2/orders?consumer_key=ck_XXXXXXXXXXX&consumer_secret=cs_XXXXXXXXXXXX

But I am stuck at updating data and tried different approaches like:

<?php
$data = [
    'status' => 'completed'
];

print_r($woocommerce->put('orders/727', $data));
?>

or

$updated_order = $wc_api->update_order( 247, array( 'status' => 'completed' ) );

print_r( $updated_order );

But nothing happens...

This is my full php-code I am using:

<?php
require __DIR__ . '/vendor/autoload.php';

use Automattic\WooCommerce\Client;

$woocommerce = new Client(
    'https://example.com',
    'consumer_key',
    'consumer_secret',
    [
        'wp_api' => true,
        'version' => 'wc/v3'
    ]
);
?>

//JSON response example:
echo($woocommerce->get(''));


$updated_order = $wc_api->update_order( 247, array( 'status' => 'completed' ) );

print_r( $updated_order );

// the updated order object will be returned 

?>

I assume there is a mistake I am addressing the API.