bbp_get_forum_subscribers( int $forum_id )

Get the users who have subscribed to the forum

Description

Parameters

$forum_id: (Optional) forum id

Return

(array|bool) Results if the forum has any subscribers, otherwise false

Source

function bbp_get_forum_subscribers( $forum_id = 0 ) {
    $forum_id = bbp_get_forum_id( $forum_id );
    if ( empty( $forum_id ) )
        return;
 
    global $wpdb;
 
    $key   = $wpdb->prefix . '_bbp_forum_subscriptions';
    $users = wp_cache_get( 'bbp_get_forum_subscribers_' . $forum_id, 'bbpress_users' );
    if ( false === $users ) {
        $users = $wpdb->get_col( "SELECT user_id FROM {$wpdb->usermeta} WHERE meta_key = '{$key}' and FIND_IN_SET('{$forum_id}', meta_value) > 0" );
        wp_cache_set( 'bbp_get_forum_subscribers_' . $forum_id, $users, 'bbpress_users' );
    }
 
    return apply_filters( 'bbp_get_forum_subscribers', $users );
}

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Changelog

Changelog
Version	Description
bbPress (r5156)	Introduced.

Uses

Uses
Uses	Description
bp-forums/forums/template.php: bbp_get_forum_id()	Return the forum id

Used By
Used By	Description
bp-forums/forums/functions.php: bbp_remove_forum_from_all_subscriptions()	Remove a deleted forum from all users’ subscriptions
bp-forums/common/functions.php: bbp_notify_forum_subscribers()	Sends notification emails for new topics to subscribed forums

Questions?

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