Facade 包装类 -- 解决视图里面长长的命名空间调用问题

<?php
/**
 * Facade 包装类
 *
 * 优点:
 * 使用简单的方式来省掉视图里面长长的命名空间调用,诸如 YII 的模版
 * 缺点:
 * 这么写在 IDE 中会失去代码自动提示的功能,对于 sublime 狗而言貌似不是缺点
 *
 * 使用方法:
 * ZGFacade::{方法名}( {facade名称}, 参数1, 参数2,...参数n )
 * 
 * <code>
 * // 初始化
 * ZGFacade::setZGFacade(&#39;form&#39;, &#39;Aert_Form&#39;);
 * ZGFacade::setZGFacade(&#39;esClient&#39;, &#39;\Elasticsearch\Client&#39;);
 * 
 * // 使用demo
 * $form = ZGFacade::newInstance(&#39;form&#39;, &#39;frm2&#39;, &#39;delete&#39;);
 * dump($form);
 * 
 * echo ZGFacade::server(&#39;form&#39;, &#39;REQUEST_METHOD&#39;);
 * echo ZGFacade::get(&#39;form&#39;, &#39;a&#39;);
 * 
 * $dsn      = Config::get(&#39;esken.dsn&#39;);
 * $esClient = ZGFacade::newInstance(&#39;esClient&#39;, $dsn);
 * dump($esClient);
 * </code>
 * @author vb2005xu@qq.com
 */
final class ZGFacade
{
private static $map = [
&#39;form&#39;=> &#39;Aert_Form&#39;
];
public static function setZGFacade($alias, $class)
{
self::$map[ $alias ] = $class;
}
private static function __facade__($facade, $method, $arguments=[])
{
if ( is_object($facade) )
{
// 调用 对象方法
return call_user_func_array( [$facade, $method], $arguments );
}
else if (is_string($facade))
{
if ( empty(self::$map[$facade]) )
{
throw new Exception("未定义 &#39;facade&#39;: {$facade} ");
}
// 调用 静态方法
if ( &#39;newInstance&#39; == $method )
   {
   $class = new ReflectionClass( self::$map[$facade] );
   return $class->newInstanceArgs( $arguments );
   }
$class = self::$map[$facade];
return call_user_func_array( [$class, $method], $arguments );
}
throw new Exception("无效 &#39;facade&#39; 调用!");
}
public function __call($method, $arguments) 
    {
    $facade = array_shift($arguments);
    return self::__facade__($facade, $method, $arguments);
    }
    public static function __callStatic($method, $arguments) 
    {
    $facade = array_shift($arguments);    
    return self::__facade__($facade, $method, $arguments);
    }
}