public function __construct()
{
if (is_null(self::$smarty)) {
// 实例化模版引擎对象
$smarty = new Smarty();
// 设置模版、缓存、编译目录
$smarty->template_dir = APP_VIEWS_PATH . '/' . CONTROLLER;
$smarty->compile_dir = APP_STORAGE_COMPILE_PATH;
$smarty->cache_dir = APP_STORAGE_CACHE_PATH;
// 设置模版使用分隔符号
$smarty->left_delimiter = C('LEFT_DELIMITER');
$smarty->right_delimiter = C('RIGHT_DELIMITER');
// 设置模版缓存信息
$smarty->caching = C('CACHE_START');
$smarty->cache_lifetime = C('CACHE_LIFE_TIME');
// 将模版引擎对象保存在类属性中
self::$smarty = $smarty;
}
}
