Experian UMS send with attachment

ums_w_attachment.php

<?php
/**
 * Script to send an email using Experian UMS with attachments
 */
$url = 'http://sysmail.fagms.net/c/tm?ACTION=SYSTEM';
$file = 'test.png';
$aid = 000000; // Replace with your ID
$email = '...'; // Replace with your email

file_put_contents($file, base64_decode(test_png()));

$params = [];
$params['AID'] = $aid;
$params['email'] = $email;
$params['systemmail_attachment_1'] = curl_file_create($file, mime_content_type($file), basename($file));

$ch = curl_init();
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: multipart/form-data'));
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $params);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADER, 1);

$response = curl_exec($ch);

print_r($response);

function curl_file_create($filename, $mimetype = '', $postname = '')
{
    return "@$filename;filename="
    . ($postname ?: basename($filename))
    . ($mimetype ? ";type=$mimetype" : '');
}

function test_png()
{
    return <<<PNG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PNG;

}