mailchimp api with curl

<?php $apikey='xxxxxxxxxxxxx'; $listid='1234567890'; $auth = base64_encode( 'user:'.$apikey ); $data = array( 'apikey' => $apikey, 'email_address' => $_REQUEST['EMAIL'], 'status' => 'subscribed', 'double_optin' => false, 'send_welcome'=>false, ); $json_data = json_encode($data); $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, 'https://us12.api.mailchimp.com/3.0/lists/'.$listid.'/members/'); curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json', 'Authorization: Basic '.$auth)); curl_setopt($ch, CURLOPT_USERAGENT, 'PHP-MCAPI/2.0'); 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_data); $result = curl_exec($ch);