让人不解的私有属性
因为用smarty,并且重新定义缓存文件夹和模板文件夹,所以在入口文件中写了这个:
$tpl->template_dir="./tpl/";
$tpl->compile_dir="./com/";
但是smarty.class.php中,这两个属性是私有的,如
private $template_dir = array('./templates/');
/**
* compile directory
*
* @var string
*/
private $compile_dir = './templates_c/';
按说即然是私有属性,在入口文件中再重新赋值是不允许的,可是离奇的事发生了,却偏偏允许,难道这里还有别的机关不成
回复讨论(解决方案)
呃...我在smarty.class.php里面看见的是var,不是private
看看类里面是否使用了 魔术方法__set之类的呢.
呃...我在smarty.class.php里面看见的是var,不是private
我用的是smarty-3.1.24
看看类里面是否使用了 魔术方法__set之类的呢.
果然!
// 访问私有属性是通过这个方法获得的,你可以查一下文件里面的__get , __set; 而且我看到文件里面是protected而不是private/** * <<magic>> Generic getter. * * Calls the appropriate getter function. * Issues an E_USER_NOTICE if no valid getter is found. * * @param string $name property name * @return mixed */ public function __get($name) { $allowed = array( 'template_dir' => 'getTemplateDir', 'config_dir' => 'getConfigDir', 'plugins_dir' => 'getPluginsDir', 'compile_dir' => 'getCompileDir', 'cache_dir' => 'getCacheDir', ); if (isset($allowed[$name])) { return $this->{$allowed[$name]}(); } else { trigger_error('Undefined property: '. get_class($this) .'::$'. $name, E_USER_NOTICE); } }
不知道你的 smarty 是什么版本的,但这个属性是私有的,总是有点不大对劲
如果要派生一个类的话就会遇到很多麻烦
我手边的 3.1 就是保护模式的
protected $template_dir = null;
并有魔术方法定义
public function __set($name, $value) { $allowed = array( 'template_dir' => 'setTemplateDir', 'config_dir' => 'setConfigDir', 'plugins_dir' => 'setPluginsDir', 'compile_dir' => 'setCompileDir', 'cache_dir' => 'setCacheDir', ); if (isset($allowed[$name])) { $this->{$allowed[$name]}($value); } else { trigger_error('Undefined property: ' . get_class($this) . '::$' . $name, E_USER_NOTICE); } }

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