bbPress.org

BOTH

You will need to test the below, as I don’t use either plugin on any forum site.

PM PRO

for PMpro you have the following hooks :

Action and Filter Hooks

I am guessing that pmpro_membership_post_membership_expiry is the correct hook.

so the code you need is :

add_action( 'pmpro_membership_post_membership_expiry', 'rew_remove_subscriptions') ;

function rew_remove_subscriptions ($user_id=0) {
	$forums = bbp_get_user_subscribed_forum_ids ($user_id) ;
	foreach ($forums as $forum=>$id) {
		bbp_remove_user_subscription ($user_id, $id, 'post' ) ;
	}
	$topics = bbp_get_user_subscribed_topic_ids ($user_id) ;
	foreach ($topics as $topic=>$id) {
	bbp_remove_user_subscription ($user_id, $id , 'post' ) ;
	}
}

MEMBERPRESS

for Memberpress you have the following links

https://docs.memberpress.com/article/325-action-hooks-in-memberpress

I am guessing that ‘mepr-event-subscription-stopped`

is the correct one, but you might need to query with memberpress

so for memberpress you would have

add_action( 'mepr-event-subscription-stopped', 'rew_remove_subscriptions') ;

function rew_remove_subscriptions ($event) {
	$subscription = $event->get_data();
	$user_id = $subscription->user();
	$forums = bbp_get_user_subscribed_forum_ids ($user_id) ;
	foreach ($forums as $forum=>$id) {
		bbp_remove_user_subscription ($user_id, $id, 'post' ) ;
	}
	$topics = bbp_get_user_subscribed_topic_ids ($user_id) ;
	foreach ($topics as $topic=>$id) {
	bbp_remove_user_subscription ($user_id, $id , 'post' ) ;
	}
}

BOTH

Put this in your child theme’s function file –

ie wp-content/themes/%your-theme-name%/functions.php

where %your-theme-name% is the name of your theme

or use

Code Snippets