Count open child bbPress forums

functions.php

<?php

$i = 0;
$children = bbp_forum_get_subforums( array( 'post_parent' => $forum_id ) );

foreach ($children as $child) :

    if ( bbp_is_forum_open( $forum_id = $child->ID ) ) {
        $i++;
        $status = bbp_get_forum_status( $forum_id = $child->ID );
        var_dump($i);
        var_dump($status);
    }

endforeach;

$count = ( $i == 0) ? 'All issues are closed!' : sprintf(_n('There is currently %s open issue.', 'There are currently %s open issues.', $i, 'mc_clients'), $i);

echo '<p class="issue_count">' . $count . '</p>';