Use MailChimp API in PHP CodeIgniter Framework

Follow given below steps:

Step 1

Download Mailchimp API File from: CodeIgniter-Library-for-MailChimp-API-v1.3.

Step 2

After then, Place MCAPI.php in given path: CodeIgniter\application\libraries- file name is MCAPI.php.

Step 3

Add mcapi.php in CodeIgniter\application\config

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

// You MailChimp API Key
// Obtained by logging into your MailChimp account and navigating to 'Account > API Keys and Info'
$config['mcapi_apikey'] = '**********'; /// mailchimp apikey

$config['mcapi_secure'] = false;

Step 4

Add content in CodeIgniter\application\models - your usermodel.php(your file).

$this->load->library('mcapi');
$listID = '*********' ; //your mailchimp list id

$retval = $this->mcapi->listSubscribe($listID, $emailAddress);

if ($this->mcapi->errorCode) {
   echo "Unable to subscribe email using listSubscribe()!";
   echo "\n\tCode=".$this->mcapi->errorCode;
   echo "\n\tMsg=".$this->mcapi->errorMessage."\n";
}
else {
   echo $emailAddress." added successfully\n";
}