Sample image upload for Etsy Listings

gistfile1.php

<?php
define('OAUTH_CONSUMER_KEY', 'YOUR_CONSUMER_KEY_HERE');
define('OAUTH_CONSUMER_SECRET', 'YOUR_CONSUMER_SECRET_HERE');
$listing_id="ID_OF_LISTING_THAT_YOU_OWN_HERE";
$filename="FILENAME_THAT_EXISTS_ON_THE_FILESYSTEM_HERE.JPG";
$mimetype="image/jpeg";
$access_token="ACCESS_TOKEN_YOU_HAVE_AUTHENTICATED_WITH_HERE";
$access_token_secret="ACCESS_SECRET_THAT_YOU_HAVE_AUTHENTICATED_WITH_HERE";

// You must define the constants OAUTH_CONSUMER_KEY and OAUTH_CONSUMER_SECRET
// You must also assign values to the variables $access_token, $access_token_secret,
// $listing_id and $filename, and $mimetype.
// Your image file is assumed to be in the same directory as this code.

$oauth = new OAuth(OAUTH_CONSUMER_KEY, OAUTH_CONSUMER_SECRET);

$oauth->enableDebug();
$oauth->setToken($access_token, $access_token_secret);

try {
    $source_file = dirname(realpath(__FILE__)) ."/$filename";

    $url = "http://openapi.etsy.com/v2/listings/".$listing_id."/images";
    $params = array('@image' => '@'.$source_file.';type='.$mimetype);

    $oauth->fetch($url, $params, OAUTH_HTTP_METHOD_POST);

    $json = $oauth->getLastResponse();
    print_r(json_decode($json, true));

} catch (OAuthException $e) {
    // You may want to recover gracefully here...
    print $oauth->getLastResponse()."\n";
    print_r($oauth->debugInfo);
    die($e->getMessage());
}

Image file or image_id string must be included

when send content of image file get following response
[body_sent] => %40image=84090%3Btype%3Dimage%2Fpng
[body_recv] => The request body is too large

This is the example from Etsy's documentation, which doesn't actually work. You can get it working using oauth and curl: https://notestoself.dev/posts/etsy-api-php-oauth-listing-image-upload/