WORDPRESS: Jetpack Subscription

WORDPRESS: Jetpack Subscription Form

<?php $status = isset( $_REQUEST['subscribe'] ) ? $_REQUEST['subscribe'] : false; ?>
<?php if ( $status == 'invalid_email' ) : ?>
    <p>You have entered an invalid e-mail, please try again!</p>
<?php elseif ( $status == 'success' ) : ?>
    <p>Thank you for subscribing! Please check your e-mail to confirm.</p>
<?php else : ?>
    <form method="POST">
        <input type="hidden" name="my-form-action" value="subscribe" />
        <input name="my-email" value="" placeholder="Enter your e-mail" />
        <input type="submit" />
    </form>
<?php endif; ?>

WORDPRESS: Jetpack Subscription Function

	/* ========================================================================================================================
	
	Jetpack Subscription Function
	
	======================================================================================================================== */
add_action( 'init', 'process_my_subscription_form' );
function process_my_subscription_form() {
    if ( isset( $_POST['my-form-action'] ) && $_POST['my-form-action'] == 'subscribe' ) {
        $email = $_POST['my-email'];
        $subscribe = Jetpack_Subscriptions::subscribe( $email, 0, false );
        // check subscription status (to be continued)
    }
}


		// check subscription status
	if ( is_wp_error( $subscribe ) ) {
	    $error = $subscribe->get_error_code();
	} else {
	    $error = false;
	    foreach ( $subscribe as $response ) {
	        if ( is_wp_error( $response ) ) {
	            $error = $response->get_error_code();
	            break;
	        }
	    }
	}

	if ( $error ) {
	    switch( $error ) {
	        case 'invalid_email':
	            $redirect = add_query_arg( 'subscribe', 'invalid_email' );
	            break;
	        case 'active': case 'pending':
	            $redirect = add_query_arg( 'subscribe', 'already' );
	            break;
	        default:
	            $redirect = add_query_arg( 'subscribe', 'error' );
	            break;
	    }
	} else {
	    $redirect = add_query_arg( 'subscribe', 'success' );
	}

	wp_safe_redirect( $redirect );