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function forum_list_access_filter($forumlist, $gid, $allow = 'allowread')
{
    global $grouplist;

    

    if (empty($forumlist)) return array();

    

    if (1 == $gid) return $forumlist;

    $forumlist_filter = $forumlist;
    $group = $grouplist[$gid];

    

    foreach ($forumlist_filter as $fid => $forum) {

        

        if (empty($forum['accesson']) && empty($group[$allow]) || !empty($forum['accesson']) && empty($forum['accesslist'][$gid][$allow])) {

            

            unset($forumlist_filter[$fid]);
            
            
        }
        unset($forumlist_filter[$fid]['accesslist']);
        
    }
    
    return $forumlist_filter;
}

function forum_filter_moduid($moduids)
{
    $moduids = trim($moduids);
    if (empty($moduids)) return '';
    $arr = explode(',', $moduids);
    $r = array();
    foreach ($arr as $_uid) {
        $_uid = intval($_uid);
        $_user = user_read($_uid);
        if (empty($_user)) continue;
        if ($_user['gid'] > 4) continue;
        $r[] = $_uid;
    }
    return implode(',', $r);
}

function forum_safe_info($forum)
{
    
    //unset($forum['moduids']);
    
    return $forum;
}

function forum_filter($forumlist)
{
    
    foreach ($forumlist as &$val) {
        unset($val['brief'], $val['announcement'], $val['seo_title'], $val['seo_keywords'], $val['create_date_fmt'], $val['icon_url'], $val['modlist']);
        
    }
    
    return $forumlist;
}

function forum_format_url($forum)
{
    global $conf;
    
    if (0 == $forum['category']) {
        // εˆ—θ‘¨URL
        
        $url = url('list-' . $forum['fid'], '', FALSE);
        
    } elseif (1 == $forum['category']) {
        // 钑道
        
        $url = url('category-' . $forum['fid'], '', FALSE);
        
    } elseif (2 == $forum['category']) {
        // 单鑡
        
        $url = url('read-' . trim($forum['brief']), '', FALSE);
        
    }
    
if ($conf['url_rewrite_on'] > 1 && $forum['well_alias']) {
    if (0 == $forum['category'] || 1 == $forum['category']) {
        $url = url($forum['well_alias'], '', FALSE);
    } elseif (2 == $forum['category']) {
        // 单鑡
        $url = ($forum['threads'] && $forum['brief']) ? url($forum['well_alias'] . '-' . trim($forum['brief']), '', FALSE) : url($forum['well_alias'], '', FALSE);
    }
}

    return $url;
}


function well_forum_alias()
{
    $forumlist = forum_list_cache();
    if (empty($forumlist)) return '';

    $key = 'forum-alias';
    static $cache = array();
    if (isset($cache[$key])) return $cache[$key];
    
    $cache[$key] = array();
    foreach ($forumlist as $val) {
        if ($val['well_alias']) $cache[$key][$val['fid']] = $val['well_alias'];
    }

    return array_flip($cache[$key]);
}

function well_forum_alias_cache()
{
    global $conf;
    $key = 'forum-alias-cache';
    static $cache = array(); // η”¨ι™ζ€ε˜ι‡εͺθƒ½εœ¨ε½“ε‰ request η”Ÿε‘½ε‘¨ζœŸηΌ“ε­˜οΌŒθ·¨θΏ›η¨‹ιœ€θ¦ε†εŠ δΈ€ε±‚ηΌ“ε­˜οΌšredis/memcached/xcache/apc
    if (isset($cache[$key])) return $cache[$key];
    if ('mysql' == $conf['cache']['type']) {
        $arr = well_forum_alias();
    } else {
        $arr = cache_get($key);
        if (NULL === $arr) {
            $arr = well_forum_alias();
            !empty($arr) AND cache_set($key, $arr);
        }
    }
    $cache[$key] = empty($arr) ? '' : $arr;
    return $cache[$key];
}



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