function bb_flatten_array($array, $cut_branch = 0, $keep_child_array_keys = true)
{
if (!is_array($array)) {
return $array;
}
if (empty($array)) {
return null;
}
$temp = array();
foreach ($array as $k => $v) {
if ($cut_branch && $k == $cut_branch) {
continue;
}
if (is_array($v)) {
if ($keep_child_array_keys) {
$temp[$k] = true;
}
$temp += bb_flatten_array($v, $cut_branch, $keep_child_array_keys);
} else {
$temp[$k] = $v;
}
}
return $temp;
}
function bb_get_forums($args = null)
{
global $bbdb;
if (is_numeric($args)) {
$args = array('child_of' => $args, 'hierarchical' => 1, 'depth' => 0);
} elseif (is_callable($args)) {
$args = array('callback' => $args);
if (1 < func_num_args()) {
$args['callback_args'] = func_get_arg(1);
}
}
$defaults = array('callback' => false, 'callback_args' => false, 'child_of' => 0, 'hierarchical' => 0, 'depth' => 0, 'cut_branch' => 0, 'where' => '', 'order_by' => 'forum_order');
$args = wp_parse_args($args, $defaults);
extract($args, EXTR_SKIP);
$child_of = (int) $child_of;
$hierarchical = 'false' === $hierarchical ? false : (bool) $hierarchical;
$depth = (int) $depth;
$where = apply_filters('get_forums_where', $where);
$key = md5(serialize($where . '|' . $order_by));
// The keys that change the SQL query
if (false !== ($forum_ids = wp_cache_get($key, 'bb_forums'))) {
$forums = _bb_get_cached_data($forum_ids, 'bb_forum', 'get_forum');
} else {
$forum_ids = array();
$forums = array();
$_forums = (array) $bbdb->get_results("SELECT * FROM {$bbdb->forums} {$where} ORDER BY `{$order_by}`;");
$_forums = bb_append_meta($_forums, 'forum');
foreach ($_forums as $f) {
$forums[(int) $f->forum_id] = $f;
$forum_ids[] = (int) $f->forum_id;
wp_cache_add($f->forum_id, $f, 'bb_forum');
wp_cache_add($f->forum_slug, $f->forum_id, 'bb_forum_slug');
}
wp_cache_set($key, $forum_ids, 'bb_forums');
}
$forums = (array) apply_filters('get_forums', $forums);
if ($child_of || $hierarchical || $depth) {
$_forums = bb_get_forums_hierarchical($child_of, $depth, $forums);
if (!is_array($_forums)) {
return false;
}
$_forums = (array) bb_flatten_array($_forums, $cut_branch);
foreach (array_keys($_forums) as $_id) {
$_forums[$_id] = $forums[$_id];
}
$forums = $_forums;
}
if (!is_callable($callback)) {
return $forums;
}
if (!is_array($callback_args)) {
$callback_args = array();
}
foreach (array_keys($forums) as $f) {
$_callback_args = $callback_args;
array_push($_callback_args, $forums[$f]->forum_id);
if (false == call_user_func_array($callback, $_callback_args)) {
// $forum_id will be last arg;
unset($forums[$f]);
}
}
return $forums;
}
