WooCommerce Rest-API Update Product - wordpress

Question

I'm trying to update remote woocommerce product but i'm stucked. How can we complete this code:
class myDemo {
public function __construct() {
$this->url = 'http://localhost/alfa/wp-json/wc/v2/products/2213';
$this->meta_key = 'whatever';
$this->consumer_key = 'ck_5978846499ea9bb1554b420e59072e46b8dedb1d';
$this->consumer_secret = 'cs_1009590c5443306f2082b2e508098be37fba2ee5';
$this->access_token = '';
$this->access_token_secret = '';
$this->method = 'PUT';
$this->set_signature_key();
$this->set_nonce();
$this->set_headers();
$this->set_base_string();
$this->set_signature();
$this->set_headers();
$this->set_header_string();
}
function get_response() {
$url = $this->url;
if( ! empty( $this->meta_key ) ) {
$url = add_query_arg( array( 'meta_key' => $this->meta_key ), $url );
}
$args = array(
'method' => $this->method,
'headers' => array(
'Authorization' => 'OAuth ' . $this->header_string,
),
);
$out = wp_remote_request( $url, $args );
return $out;
}
function set_signature_key() {
$this->signature_key = urlencode( $this->consumer_secret ) . '&' . urlencode( $this->access_token_secret );
}
function set_nonce() {
$this->nonce = wp_create_nonce( rand() . $this->url . $this->method );
}
function set_headers() {
if( ! isset( $this->headers ) ) {
$this->headers = array(
'oauth_consumer_key' => $this->consumer_key,
'oauth_nonce' => $this->nonce,
'oauth_signature_method' => 'HMAC-SHA1',
'oauth_timestamp' => time(),
'oauth_token' => $this->access_token,
'oauth_version' => '1.0',
);
} elseif( isset( $this->signature ) ) {
$this->headers['oauth_signature'] = $this->signature;
}
}
function set_base_string() {
$headers = $this->headers;
$url_params = array(
'meta_key' => $this->meta_key
);
$headers_and_params = array_merge( $headers, $url_params );
ksort( $headers_and_params );
$headers_and_params_string = '';
foreach( $headers_and_params as $key => $value ) {
$headers_and_params_string .= "$key=$value&";
}
$headers_and_params_string = rtrim( $headers_and_params_string, '&' );
$out = $this->method . '&' . rawurlencode( $this->url ) . '&' . rawurlencode( $headers_and_params_string );
$this->base_string = $out;
}
function set_signature() {
$out = hash_hmac( 'sha1', $this->base_string, $this->signature_key, TRUE );
$out = base64_encode( $out );
$this->signature = $out;
}
function set_header_string() {
// Will hold the combined string of headers.
$out = '';
foreach( $this->headers as $key => $value ) {
$value = rawurlencode( $value );
$out .= $key . '=' . '"' . $value . '"' . ', ';
}
$out = rtrim( $out, ', ' );
$this->header_string = $out;
}
}
$demo = new myDemo();
die(json_encode($demo->get_response()));
I'm interesting with that:
https://woocommerce.github.io/woocommerce-rest-api-docs/?php#update-a-product
I saw this code part:
$data = [
'regular_price' => '24.54'
];
I must send this data array to remote woocommerce. But i don't know how.
Thanks for everything.