$smarty= new Smarty();
$smarty -> setTemplateDir(ROOT. 'templates')
-> setCompileDir(ROOT. 'templates_c')
-> setPluginsDir(ROOT. 'plugins'.DS)
-> setCacheDir(ROOT. 'cache'.DS)
-> setConfigDir(ROOT. 'configs');
$smarty-> caching= false;
$smarty-> cache_lifetime= 60* 60* 24;
$smarty-> left_delimiter= '{';
$smarty-> right_delimiter= '}';

$smarty-> assign( "title", "测试用的网页输出");
$smarty-> display( "test.tpl");