急smarty上传到空间配置文件需要怎样配置?该如何处理

debugging=false;
   $smarty->compile_check=false;
   $smarty->template_dir = "./templates/".$smartytpl;
   $smarty->compile_dir = "./templates_c/";
   $smarty->config_dir = "./config/";
   $smarty->cache_dir = "./cache/";
   $smarty->caching = false;            //上传要 true
   $smarty->cache_lifetime = 118;
   $smarty->left_delimiter = "{";
   $smarty->right_delimiter = "}";
 //******************
?>

 include_once("class/Smarty.class.php");
$global['path']['root']     = dirname(__FILE__) . '/';   //网站根目录
$smarty = new Smarty();
$smarty->template_dir         = $global['path']['root'] . 'templates/default/';  //smarty缓存文件存放的目录，我这边是 themes/default/
$smarty->compile_dir          = $global['path']['root'] . 'tmp/templates_c/';
$smarty->config_dir           = $global['path']['root'] . 'conf/';
$smarty->cache_dir            = $global['path']['cache']. 'smarty/';
$smarty->caching              = 0;
$smarty->cache_lifetime       = 6000;
$smarty->left_delimiter       = '';
$smarty->trusted_dir          = $global['path']['root'];