Paid Memberships Pro Redirect Non-members to Login/Homepage

pmpro-redirect-non-members.php

/*
	Redirect to login or homepage if user is logged out or not a member
	Add this code to your active theme's functions.php file.
*/
function my_template_redirect()
{
	global $current_user;

	$okay_pages = array(pmpro_getOption('billing_page_id'), pmpro_getOption('account_page_id'), pmpro_getOption('levels_page_id'), pmpro_getOption('checkout_page_id'), pmpro_getOption('confirmation_page_id'));
	
	//if the user doesn't have a membership, send them home				
	if(!$current_user->ID 
		&& !is_home()
		&& !is_page($okay_pages) 
		&& !strpos($_SERVER['REQUEST_URI'], "login"))
	{		
		wp_redirect(home_url("wp-login.php?redirect_to=" . urlencode($_SERVER['REQUEST_URI'])));
	}	
	elseif(is_page() 
			&& !is_home()
			&& !is_page($okay_pages) 
			&& !$current_user->membership_level->ID)
	{		
		wp_redirect(home_url());
	}
}
add_action('template_redirect', 'my_template_redirect');

This recipe is included in the blog post on "Lock Down Everything But Homepage for Non-Users" at Paid Memberships Pro here: https://www.paidmembershipspro.com/lock-down-everything-but-homepage-for-non-users/