nem-php: broadcast transaction

nem-php-broadcast_tx.php

<?php

use NEM\API;
use NEM\Models\MosaicAttachments;
use NEM\Models\MosaicAttachment;
use NEM\Models\Mosaic;
use NEM\Models\Transaction\Transfer;
use NEM\Infrastructure\Transaction as TransactionService;

// prepare the transaction
$recipientAddr = "NB72EM6TTSX72O47T3GQFL345AB5WYKIDODKPPYW";

$txData = [
    "amount" => 1000000,
    "recipient" => $recipientAddr,
    "mosaics" => (new MosaicAttachments([
        new MosaicAttachment([
            "mosaicId" => (new Mosaic(["namespaceId" => "nem", "name" => "xem"]))->toDTO(),
            "quantity" => 1000000,
        ])
    ]))->toDTO(),
    "message"   => (new Message(["plain" => ""]))->toDTO(),
];

// transaction prepared
$transaction = new Transfer($txData);

// prepare the connection (for broadcast)
$api = new API([
    "use_ssl"  => false,
    "protocol" => "http",
    "host" => "hugealice.nem.ninja",
    "port" => 7890,
    "endpoint" => "/",
]);

// now prepare the keypair used for signing
$keypair = new KeyPair("dd19f3f3178c0867771eed180310a484e1b76527f7a271e3c8b5264e4a5aa414");

// use transaction SDK service to sign + broadcast transaction
$service = new TransactionService($api);

// sign transaction
$signature = $service->signTransaction($transaction, $keypair);
$broadcast = [
    "data" => Buffer::fromUInt8($transaction->serialize())->getHex(),
    "signature" => $signature->getHex(),
];

// broadcast transaction
$endpoint = $service->getAnnouncePath($transaction, $keypair);
$apiUrl   = $service->getPath($endpoint, []);
$response = $api->postJSON($apiUrl, $broadcast);

// interpret result
$result = json_decode($response, true);

var_export($result, true);
exit;