function complete_order($orderid) {
$consumer_key = 'xxx'; // Add your own Consumer Key here
$consumer_secret = 'xxxx'; // Add your own Consumer Secret here
$store_url = 'xxx'; // Add the home URL to the store you want to connect to here
$options = array(
    'debug' => true,
    'return_as_array' => false,
    'validate_url' => false,
    'timeout' => 30,
    'ssl_verify' => false,
);
$servername = "xxx";
$username = "xxx";
$password = "xxx";
$dbname = "xxx";
$conn = new mysqli($servername, $username, $password, $dbname);
$sql ="SELECT * FROM xxxxxx WHERE ID = '$orderid'";
$result = $conn->query($sql);
while($row = $result->fetch_assoc()) {
    $poststatus= '. $row["post_status"].';
    if ($poststatus = wc-manual-renewal-re){
    $client = new WC_API_Client($store_url, $consumer_key, $consumer_secret, $options);

    $client->orders->update_status($orderid, 'wc-manual-renewal-re');
}else{$client = new WC_API_Client($store_url, $consumer_key, $consumer_secret, $options);

    $client->orders->update_status($orderid, 'wc-completed');}}}