Show the number of subscribers of a Mailchimp Newsletter.

mailchimp-subscribers

<?php

/* Show the number of subscribers of a Mailchimp Newsletter
 *
 * Contains "Mini MailChimp API v2 wrapper" by Drew McLellan
 * to be found at https://github.com/drewm/mailchimp-api
 */

class MailChimp
{
	private $api_key;
	private $api_endpoint = 'https://<dc>.api.mailchimp.com/2.0/';

	function __construct($api_key)
	{
		$this->api_key = $api_key;
		list(, $datacentre) = explode('-', $api_key);
		$this->api_endpoint = str_replace('<dc>', $datacentre, $this->api_endpoint);
	}

	public function call($method, $args=array())
	{
		return $this->_raw_request($method, $args);
	}

	private function _raw_request($method, $args=array())
	{      
		$args['apikey'] = $this->api_key;

		$url = $this->api_endpoint.'/'.$method.'.json';

		$ch = curl_init();
		curl_setopt($ch, CURLOPT_URL, $url);
		curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json'));
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
		curl_setopt($ch, CURLOPT_TIMEOUT, 10);
		curl_setopt($ch, CURLOPT_POST, true);
		curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($args));
		$result = curl_exec($ch);
		curl_close($ch);

		return $result ? json_decode($result, true) : false;
	}

}

$MailChimp = new MailChimp('YOURAPIKEY'); // enter your API-Key here
$member_count = $MailChimp->call('lists/list');
?>

<?php echo $member_count['data'][0]['stats']['member_count']; ?>