Get latest mailchimp newsletters

get-latest-mailchimp-newsletters-from-api.php

<?php 
// CREDIT: 
// https://rudrastyh.com/mailchimp-api/get-lists.html

$api_key = 'xxxxxxxxxxxxxxxxx';
$us = 'xxx';

function rudr_mailchimp_curl_connect($url, $request_type, $api_key, $data = array())
{
    if ($request_type == 'GET')
        $url .= '?' . http_build_query($data);

    $mch = curl_init();
    $headers = array(
        'Content-Type: application/json',
        'Authorization: Basic ' . base64_encode('user:' . $api_key)
    );
    curl_setopt($mch, CURLOPT_URL, $url);
    curl_setopt($mch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($mch, CURLOPT_RETURNTRANSFER, true); // do not echo the result, write it into variable
    curl_setopt($mch, CURLOPT_CUSTOMREQUEST, $request_type); // according to MailChimp API: POST/GET/PATCH/PUT/DELETE
    curl_setopt($mch, CURLOPT_TIMEOUT, 10);
    curl_setopt($mch, CURLOPT_SSL_VERIFYPEER, false); // certificate verification for TLS/SSL connection

    if ($request_type != 'GET') {
        curl_setopt($mch, CURLOPT_POST, true);
        curl_setopt($mch, CURLOPT_POSTFIELDS, json_encode($data)); // send data in json
    }

    return curl_exec($mch);
}

$response = rudr_mailchimp_curl_connect('https://' . $us . '.api.mailchimp.com/3.0/campaigns/?sort_field=send_time&sort_dir=DESC', 'GET', $api_key);
$response = json_decode($response);
$campaigns = $response->campaigns;

foreach ($campaigns as $campaign) {
    if (strpos(strtolower($campaign->settings->subject_line), 'good news') !== false) {
        $campaignContent = rudr_mailchimp_curl_connect('https://' . $us . '.api.mailchimp.com/3.0/campaigns/' . $campaign->id . '/content', 'GET', $api_key);
        $campaignContent = json_decode($campaignContent);
        $html = $campaignContent->html;
        $doc = new DOMDocument;
        $mock = new DOMDocument;
        $doc->loadHTML($html);
        $body = $doc->getElementsByTagName('body')->item(0);
        foreach ($body->childNodes as $child) {
            $mock->appendChild($mock->importNode($child, true));
        }
        echo $mock->saveHTML();
        break;
    }
}