PHP利用function，use来hook？

<code class="lang-php">$hooks = function($meta, $type) use ($inspector, $instance)
            {
                if (isset($meta[$type]))
                {
                    $run = array();

                    foreach ($meta[$type] as $method)
                    {
                        $hookMeta = $inspector->getMethodMeta($method);

                        if (in_array($method, $run) && !empty($hookMeta["@once"]))
                        {
                            continue;
                        }

                        $instance->$method();
                        $run[] = $method;
                    }
                }
            };

            $hooks($methodMeta, "@before");
</code>

<code class="lang-php">$hooks = function($meta, $type) use ($inspector, $instance)
            {
                if (isset($meta[$type]))
                {
                    $run = array();

                    foreach ($meta[$type] as $method)
                    {
                        $hookMeta = $inspector->getMethodMeta($method);

                        if (in_array($method, $run) && !empty($hookMeta["@once"]))
                        {
                            continue;
                        }

                        $instance->$method();
                        $run[] = $method;
                    }
                }
            };

            $hooks($methodMeta, "@before");
</code>