Using wordpress xmlrpc to post via php help

[JeffW]

I’m using this code and it works but i want more.

	$function_name = "wp.newPost";
	$url = "https://wordpressurl/xmlrpc.php";

	$client = new xmlrpc_client($url);
	$client->return_type = 'phpvals';

	$message = new xmlrpcmsg(
			$function_name, 
			array(
				new xmlrpcval(0, "int"), 
				new xmlrpcval("username", "string"), 
				new xmlrpcval("password", "string"), 
				new xmlrpcval(
					array(
						"post_type" => new xmlrpcval("post", "string"), 
						"post_status" => new xmlrpcval("draft", "string"), 
						"post_title" => new xmlrpcval("$releasename $dlsiteenglish $dlsitejapanese", "string"), 
						"post_author" => new xmlrpcval(1, "int"), 
						"post_content" => new xmlrpcval("$content", "string"),
						"comment_status" => new xmlrpcval("open", "string")
						), 
					"struct"
					)
				)
			);

	$resp = $client->send($message);

	if ($resp->faultCode()) echo 'KO. Error: '.$resp->faultString(); else echo "Post id is: " . $resp->value() . "\n";

And i’ve been trying to use this to make sense of the formatting:
https://codex.wordpress.org/XML-RPC_WordPress_API/Posts

Does anyone know how to add categories and tags? I tried many different iterations and none of it worked.

I would also like to eventually add featured image and image gallery to the post.

Can anyone help out? or suggest a different way to do this or easier way?

thank you very much in advance!