function qa_get_options($names)
{
    global $qa_options_cache, $qa_options_loaded;
    //	If any options not cached, retrieve them from database via standard pending mechanism
    if (!$qa_options_loaded) {
        qa_preload_options();
    }
    if (!$qa_options_loaded) {
        require_once QA_INCLUDE_DIR . 'qa-db-selects.php';
        qa_load_options_results(array(qa_db_get_pending_result('options'), qa_db_get_pending_result('time')));
    }
    //	Pull out the options specifically requested here, and assign defaults
    $options = array();
    foreach ($names as $name) {
        if (!isset($qa_options_cache[$name])) {
            $todatabase = true;
            switch ($name) {
                // don't write default to database if option was deprecated, or depends on site language (which could be changed)
                case 'custom_sidebar':
                case 'site_title':
                case 'email_privacy':
                case 'answer_needs_login':
                case 'ask_needs_login':
                case 'comment_needs_login':
                case 'db_time':
                    $todatabase = false;
                    break;
            }
            qa_set_option($name, qa_default_option($name), $todatabase);
        }
        $options[$name] = $qa_options_cache[$name];
    }
    return $options;
}

function qa_get_logged_in_levels()
{
    require_once QA_INCLUDE_DIR . 'db/selects.php';
    return qa_db_get_pending_result('userlevels', qa_db_user_levels_selectspec(qa_get_logged_in_userid(), true));
}

function qa_get_favorite_non_qs_map()
{
    global $qa_favorite_non_qs_map;
    if (!isset($qa_favorite_non_qs_map)) {
        $qa_favorite_non_qs_map = array();
        $loginuserid = qa_get_logged_in_userid();
        if (isset($loginuserid)) {
            require_once QA_INCLUDE_DIR . 'db/selects.php';
            require_once QA_INCLUDE_DIR . 'util/string.php';
            $favoritenonqs = qa_db_get_pending_result('favoritenonqs', qa_db_user_favorite_non_qs_selectspec($loginuserid));
            foreach ($favoritenonqs as $favorite) {
                switch ($favorite['type']) {
                    case QA_ENTITY_USER:
                        $qa_favorite_non_qs_map['user'][$favorite['userid']] = true;
                        break;
                    case QA_ENTITY_TAG:
                        $qa_favorite_non_qs_map['tag'][qa_strtolower($favorite['tags'])] = true;
                        break;
                    case QA_ENTITY_CATEGORY:
                        $qa_favorite_non_qs_map['category'][$favorite['categorybackpath']] = true;
                        break;
                }
            }
        }
    }
    return $qa_favorite_non_qs_map;
}

 function qa_get_logged_in_user_field($field)
 {
     if (qa_to_override(__FUNCTION__)) {
         $args = func_get_args();
         return qa_call_override(__FUNCTION__, $args);
     }
     global $qa_cached_logged_in_user;
     $userid = qa_get_logged_in_userid();
     if (isset($userid) && !isset($qa_cached_logged_in_user)) {
         require_once QA_INCLUDE_DIR . 'qa-db-selects.php';
         $qa_cached_logged_in_user = qa_db_get_pending_result('loggedinuser', qa_db_user_account_selectspec($userid, true));
         if (!isset($qa_cached_logged_in_user)) {
             // the user can no longer be found (should be because they're deleted)
             qa_clear_session_user();
             qa_fatal_error('The logged in user cannot be found');
             // it's too late here to proceed because the caller may already be branching based on whether someone is logged in
         }
     }
     return @$qa_cached_logged_in_user[$field];
 }

function qa_content_prepare($voting = false, $categoryids = null)
{
    if (qa_to_override(__FUNCTION__)) {
        $args = func_get_args();
        return qa_call_override(__FUNCTION__, $args);
    }
    global $qa_template, $qa_page_error_html;
    if (QA_DEBUG_PERFORMANCE) {
        global $qa_usage;
        $qa_usage->mark('control');
    }
    $request = qa_request();
    $requestlower = qa_request();
    $navpages = qa_db_get_pending_result('navpages');
    $widgets = qa_db_get_pending_result('widgets');
    if (isset($categoryids) && !is_array($categoryids)) {
        // accept old-style parameter
        $categoryids = array($categoryids);
    }
    $lastcategoryid = count($categoryids) ? end($categoryids) : null;
    $charset = 'utf-8';
    $qa_content = array('content_type' => 'text/html; charset=' . $charset, 'charset' => $charset, 'direction' => qa_opt('site_text_direction'), 'site_title' => qa_html(qa_opt('site_title')), 'head_lines' => array(), 'navigation' => array('user' => array(), 'main' => array(), 'footer' => array('feedback' => array('url' => qa_path_html('feedback'), 'label' => qa_lang_html('main/nav_feedback')))), 'sidebar' => qa_opt('show_custom_sidebar') ? qa_opt('custom_sidebar') : null, 'sidepanel' => qa_opt('show_custom_sidepanel') ? qa_opt('custom_sidepanel') : null, 'widgets' => array());
    if (qa_opt('show_custom_in_head')) {
        $qa_content['head_lines'][] = qa_opt('custom_in_head');
    }
    if (qa_opt('show_custom_header')) {
        $qa_content['body_header'] = qa_opt('custom_header');
    }
    if (qa_opt('show_custom_footer')) {
        $qa_content['body_footer'] = qa_opt('custom_footer');
    }
    if (isset($categoryids)) {
        $qa_content['categoryids'] = $categoryids;
    }
    foreach ($navpages as $page) {
        if ($page['nav'] == 'B') {
            qa_navigation_add_page($qa_content['navigation']['main'], $page);
        }
    }
    if (qa_opt('nav_home') && qa_opt('show_custom_home')) {
        $qa_content['navigation']['main']['$'] = array('url' => qa_path_html(''), 'label' => qa_lang_html('main/nav_home'));
    }
    if (qa_opt('nav_activity')) {
        $qa_content['navigation']['main']['activity'] = array('url' => qa_path_html('activity'), 'label' => qa_lang_html('main/nav_activity'));
    }
    $hascustomhome = qa_has_custom_home();
    if (qa_opt($hascustomhome ? 'nav_qa_not_home' : 'nav_qa_is_home')) {
        $qa_content['navigation']['main'][$hascustomhome ? 'qa' : '$'] = array('url' => qa_path_html($hascustomhome ? 'qa' : ''), 'label' => qa_lang_html('main/nav_qa'));
    }
    if (qa_opt('nav_questions')) {
        $qa_content['navigation']['main']['questions'] = array('url' => qa_path_html('questions'), 'label' => qa_lang_html('main/nav_qs'));
    }
    if (qa_opt('nav_hot')) {
        $qa_content['navigation']['main']['hot'] = array('url' => qa_path_html('hot'), 'label' => qa_lang_html('main/nav_hot'));
    }
    if (qa_opt('nav_unanswered')) {
        $qa_content['navigation']['main']['unanswered'] = array('url' => qa_path_html('unanswered'), 'label' => qa_lang_html('main/nav_unanswered'));
    }
    if (qa_using_tags() && qa_opt('nav_tags')) {
        $qa_content['navigation']['main']['tag'] = array('url' => qa_path_html('tags'), 'label' => qa_lang_html('main/nav_tags'), 'selected_on' => array('tags$', 'tag/'));
    }
    if (qa_using_categories() && qa_opt('nav_categories')) {
        $qa_content['navigation']['main']['categories'] = array('url' => qa_path_html('categories'), 'label' => qa_lang_html('main/nav_categories'), 'selected_on' => array('categories$', 'categories/'));
    }
    if (qa_opt('nav_users')) {
        $qa_content['navigation']['main']['user'] = array('url' => qa_path_html('users'), 'label' => qa_lang_html('main/nav_users'), 'selected_on' => array('users$', 'users/', 'user/'));
    }
    // Only the 'level' permission error prevents the menu option being shown - others reported on qa-page-ask.php
    if (qa_opt('nav_ask') && qa_user_maximum_permit_error('permit_post_q') != 'level') {
        $qa_content['navigation']['main']['ask'] = array('url' => qa_path_html('ask', qa_using_categories() && strlen($lastcategoryid) ? array('cat' => $lastcategoryid) : null), 'label' => qa_lang_html('main/nav_ask'));
    }
    if (qa_get_logged_in_level() >= QA_USER_LEVEL_ADMIN || !qa_user_maximum_permit_error('permit_moderate') || !qa_user_maximum_permit_error('permit_hide_show') || !qa_user_maximum_permit_error('permit_delete_hidden')) {
        $qa_content['navigation']['main']['admin'] = array('url' => qa_path_html('admin'), 'label' => qa_lang_html('main/nav_admin'), 'selected_on' => array('admin/'));
    }
    $qa_content['search'] = array('form_tags' => 'method="get" action="' . qa_path_html('search') . '"', 'form_extra' => qa_path_form_html('search'), 'title' => qa_lang_html('main/search_title'), 'field_tags' => 'name="q"', 'button_label' => qa_lang_html('main/search_button'));
    if (!qa_opt('feedback_enabled')) {
        unset($qa_content['navigation']['footer']['feedback']);
    }
    foreach ($navpages as $page) {
        if ($page['nav'] == 'M' || $page['nav'] == 'O' || $page['nav'] == 'F') {
            qa_navigation_add_page($qa_content['navigation'][$page['nav'] == 'F' ? 'footer' : 'main'], $page);
        }
    }
    $regioncodes = array('F' => 'full', 'M' => 'main', 'S' => 'side');
    $placecodes = array('T' => 'top', 'H' => 'high', 'L' => 'low', 'B' => 'bottom');
    foreach ($widgets as $widget) {
        if (is_numeric(strpos(',' . $widget['tags'] . ',', ',' . $qa_template . ',')) || is_numeric(strpos(',' . $widget['tags'] . ',', ',all,'))) {
            // see if it has been selected for display on this template
            $region = @$regioncodes[substr($widget['place'], 0, 1)];
            $place = @$placecodes[substr($widget['place'], 1, 2)];
            if (isset($region) && isset($place)) {
                // check region/place codes recognized
                $module = qa_load_module('widget', $widget['title']);
                if (isset($module) && method_exists($module, 'allow_template') && $module->allow_template(substr($qa_template, 0, 7) == 'custom-' ? 'custom' : $qa_template) && method_exists($module, 'allow_region') && $module->allow_region($region) && method_exists($module, 'output_widget')) {
                    $qa_content['widgets'][$region][$place][] = $module;
                }
                // if module loaded and happy to be displayed here, tell theme about it
            }
        }
    }
//.........这里部分代码省略.........

function qa_user_limits_remaining($action)
{
    $userlimits = qa_db_get_pending_result('userlimits', qa_db_user_limits_selectspec(qa_get_logged_in_userid()));
    $iplimits = qa_db_get_pending_result('iplimits', qa_db_ip_limits_selectspec(qa_remote_ip_address()));
    return qa_limits_calc_remaining($action, @$userlimits[$action], @$iplimits[$action]);
}