PHP BigPipe::context示例

 /**
  * 模板调用函数。在标签关闭时调用，将会返回标签父级节点的执行状态。
  *
  * @param int $type 标签类型
  * @static
  * @final
  * @access public
  * @return bool 父级节点是否需要执行
  * @see compileCloseTag
  * @see PageController::closeTag
  */
 public static final function close($type, $params = null)
 {
     assert('self::$state === self::STAT_FIRST || self::$state === self::STAT_LOOP');
     $context = self::$context;
     assert('$context->type === $type');
     self::$controller->closeTag($context);
     $context->opened = false;
     $context = $context->parent;
     self::$context = $context;
     return $context->opened;
 }