请问下面这段代码用PHP怎么解密
%5B9%C3%C0%B9%FA%BE%E7%C7%E9%C6%AC%5D%5B%B9%D4%B9%D4%C5%AE%CA%C7%B4%F3%C3%F7%D0%C7%5D%5BHR-HDTV%5D%5B264%5D%5B%CB%AB%D3%EF%D7%D6%C4%BB%5D
%5B9%C3%C0%B9%FA%BE%E7%C7%E9%C6%AC%5D%5B%B9%D4%B9%D4%C5%AE%CA%C7%B4%F3%C3%F7%D0%C7%5D%5BHR-HDTV%5D%5B264%5D%5B%CB%AB%D3%EF%D7%D6%C4%BB%5D
exit( urldecode('%5B9%C3%C0%B9%FA%BE%E7%C7%E9%C6%AC%5D%5B%B9%D4%B9%D4%C5%AE%CA%C7%B4%F3%C3%F7%D0%C7%5D%5BHR-HDTV%5D%5B264%5D%5B%CB%AB%D3%EF%D7%D6%C4%BB%5D') );