preserve requested redirect with PMPro Member Homepages

pmpromh_modified_login_redirect.php

// preserve requested redirect with PMPro Member Homepages
// forked from @greathmaster
function pmpromh_modified_login_redirect($redirect_to, $request, $user)
{
	if(isset($request) && $redirect_to != admin_url())
		return $request;

	//check level
	if(!empty($user) && !empty($user->ID) && function_exists('pmpro_getMembershipLevelForUser')) {
		$level = pmpro_getMembershipLevelForUser($user->ID);
		$member_homepage_id = pmpromh_getHomepageForLevel($level->id);
		
		if(!empty($member_homepage_id)) {
			$redirect_to = get_permalink($member_homepage_id);
		}
	}
	

	return $redirect_to;
}


function custom_init()
{
	remove_filter('login_redirect', 'pmpromh_login_redirect', 10, 3);
	add_filter('login_redirect', 'pmpromh_modified_login_redirect', 10, 3);	
}

add_action('init', 'custom_init');

function my_pmpromh_template_redirect_homepage() {
	global $current_user;
	//is there a user to check?
	if(!empty($current_user->ID) && is_front_page()) {
		$member_homepage_id = pmpromh_getHomepageForLevel();
		if(isset($_REQUEST['redirect_to']) && $_REQUEST['redirect_to'] != admin_url()){
			wp_redirect($_REQUEST['redirect_to']);
			exit;
		}
		else if(!empty($member_homepage_id) && !is_page($member_homepage_id)) {
			wp_redirect(get_permalink($member_homepage_id));
			exit;
		}
	}
}
add_action('template_redirect', 'my_pmpromh_template_redirect_homepage', 5);