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<?php
require_once 'Mailchimp.php';

//Requirements for connecting to mailchimp
$url_endpoint_template = 'https://{{dc}}.api.mailchimp.com/2.0/';
$api_key = 'api-key';


//Findout the endpoint url
$url_endpoint = str_replace('{{dc}}', substr($api_key, -3), $url_endpoint_template);


$mailchimp = new Mailchimp($api_key);

$mylist = $mailchimp->lists->getList(array('list_name' => 'My Contacts')); 
//Returns an array with lists info and a data component list['data'] witch is an array with lists and info about them

//Getting only the ids
$ids = getListIds($mylist);


//Create Batch 
$batch = array(
        array( 
                'email' => array('email'=> 'zaxarovounis@infogeek.gr'), 
                'email_type' => 'html', 
                'merge_vars' => array('fname' => 'lalas', 'lname' => 'piou')
                )
        
);


/**
 * Subscribe two email address
 * @param list_id
 * @param batch (above)
 * @param send_confirmation_email boolean (if false it subscribes the email address directly)
 * @param update_existing boolean
 * @param replace_interests boolean
 */

$result = $mailchimp->lists->batchSubscribe($ids[0], $batch, false, true, true);
     


//Function for getting only the ids
function getListIds($mailchimp_list){
        $ids = array();
        foreach ($mailchimp_list['data'] as $list){
                array_push($ids, $list['id']);
        }
        return $ids;
}