Mailchimp API 3.0 Batch Subscribe

Question

Acconding to the documentation a POST to /lists/{list_id} should batch subscribe or unsubscribe list members.

If I send two members; one new member and one unsubscr

Answer 1

For Batch subscribe try this below code.This is tested and 100% working code.

<?php
$apikey  = ''; // Your Mailchimp ApiKey
$list_id = ''; // your List ID Where you want to add subscriber

$servername = 'localhost';
$username   = 'root';
$password   = '';
$dbname     = 'dada_mail_to_mailchimp';
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
    die('Connection failed: ' . $conn->connect_error);
}

$sql       = 'SELECT * FROM emails Limit 2';
$result    = $conn->query($sql);
$finalData = [];
if ($result->num_rows > 0) {
    // output data of each row
    while ($row = $result->fetch_assoc()) {
        $individulData = array(
            'apikey'        => $apikey,
            'email_address' => $row['email'],
            'status'        => $row['status'],//subscribe,pending,unsubscribe
            'merge_fields'  => array(
                'FNAME' => $row['FNAME'],
                'LNAME' => $row['LNAME'],
            )
        );

        $json_individulData        = json_encode($individulData);
        $finalData['operations'][] =
            array(
                "method" => "POST",
                "path"   => "/lists/$list_id/members/",
                "body"   => $json_individulData
            );
    }
}

$api_response = batchSubscribe($finalData, $apikey);
print_r($api_response);
$conn->close();

/**
 * Mailchimp API- List Batch Subscribe added function
 *
 * @param array  $data   Passed you data as an array format.
 * @param string $apikey your mailchimp api key.
 *
 * @return mixed
 */
function batchSubscribe(array $data, $apikey)
{
    $auth          = base64_encode('user:' . $apikey);
    $json_postData = json_encode($data);
    $ch            = curl_init();
    $dataCenter    = substr($apikey, strpos($apikey, '-') + 1);
    $curlopt_url   = 'https://' . $dataCenter . '.api.mailchimp.com/3.0/batches/';
    curl_setopt($ch, CURLOPT_URL, $curlopt_url);

    curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json',
        'Authorization: Basic ' . $auth));
    curl_setopt($ch, CURLOPT_USERAGENT, 'PHP-MCAPI/3.0');
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_TIMEOUT, 10);
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $json_postData);

    $result = curl_exec($ch);
    return $result;
}