Laravel8 guzzleでxml送信

<?php
~~~略

use Illuminate\Support\Facades\Http;

~~~略

$xml = new \SimpleXMLElement('<Hogeattribute></Hogeattribute>');
$xml->addChild('hogeId', 'hoge1');

$response = Http::withBody(
    $xml->asXML(),
    'text/xml'
)->post('https://hoge');

$json = json_encode(simplexml_load_string($response->body()));
$data = json_decode($json, true);

参照