PHP use Function,use to hook?

$hooks = function($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");

This hooks function has a use in it what's going on?
I can't think of .... Master Wang told

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$hooks = function($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");

This hooks function has a use in it what's going on?
I can't think of .... Master Wang told

5.3 In the new closure syntax, use is used to capture variables into anonymous functions, see:

http://www.php.net/manual/zh/functions.anonymous.php
Http://www.cnblogs.com/melonblog/archive/2013/05/01/3052611.html

