Mailchimp Form

<?php


if (function_exists('register_sidebar'))
{
  /* original function with 'name' parameter added */
  register_sidebar(array(
    'name'=>'right',
    'before_widget' => '',
    'after_widget' => '',
    'before_title' => '',
    'after_title' => ''
  ));

/* new code copy and pasted from above with name change */
  register_sidebar(array(
    'name'=>'left',
    'before_widget' => '',
    'after_widget' => '',
    'before_title' => '',
    'after_title' => ''
  ));

}


function createMCForm() {
	return '
	<div id="formcont">
		<form id="myform">

			<h1>Sign Up to Receive Exclusive <br />
        			News & Updates
			</h1>

        		<fieldset>
            			<h2>Get the Best Updates</h2>

				<p class="input">
                			<span>
                    				<img src="Images/mail_icon.png" class="mail_icon" title="" alt="" />

	            				<input type="email" name="EMAIL" class="Email" id="email" />
                			</span>

					<input type="hidden" name="action" value="ajax_action" />
                    			<input type="submit" value="" name="subscribe" class="button" id="submit_button" />
            			</p>


        		</fieldset>
		</form>
	</div>
	<div id="output"></div>';
}
add_shortcode('MCform', 'createMCForm');




wp_enqueue_script( 'ajax-script', plugin_dir_url(__FILE__).'mailchimp.js', array('jquery'), 1.0 ); // jQuery will be included automatically


wp_localize_script( 'ajax-script', 'ajax_object', array(
				'ajaxurl' => admin_url( 'admin-ajax.php' ),
				'errorEmpty' => __( 'The e-mail field is required' ),
				'errorEmail' => __( 'The entered e-mail address is not valid.' )
		)
);




add_action( 'wp_ajax_ajax_action', 'ajax_action_stuff' ); // ajax for logged in users
add_action( 'wp_ajax_nopriv_ajax_action', 'ajax_action_stuff' ); // ajax for not logged in users

function ajax_action_stuff() {
	$resp['status'] = 'error';
	$resp['errmessage'] = '';
	$apikey = 'API KEY REMOVED';
	$listID = 'LIST ID REMOVED';
	if (!empty($_POST['email']) && !empty($_POST['name'])) {

		$name = $_POST['name'];
		$lname = $_POST['lname'];
		$email = $_POST['email'];

		$url = sprintf('http://api.mailchimp.com/1.2/?method=listSubscribe&apikey=%s&id=%s&email_address=%s&merge_vars[OPTINIP]=%s&output=json&merge_vars[FNAME]=%s&merge_vars[LNAME]=%s', $apikey, $listID, $email, $_SERVER['REMOTE_ADDR'], $name, $lname);
		$ch = curl_init($url);
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
		$data = curl_exec($ch);
		curl_close($ch);
		$arr = json_decode($data, true);
		if ($arr == 1) {
			$resp['errmessage'] = 'Check now your e-mail and confirm your subsciption.';
			$resp['status'] = 'success';
		} else {
			switch ($arr['code']) {
				case 214:
				$resp['errmessage'] = 'You are already subscribed.';
				break;
				// check the MailChimp API for more options
				default:
				$resp['errmessage'] = 'Unkown error...';
				break;
			}
		}
	} else {
		$resp['errmessage'] = 'Missing required fields!';
	}
	header( "Content-Type: application/json" );
	echo json_encode($resp);
	exit;
}

?>