[ISITDTU 2019]EasyPHP debug002的WriteUp

?_=((%8D%9A%9E%9B%99%96%93%9A)^(%FF%FF%FF%FF%FF%FF%FF%FF))(((%9A%9E%9B)^(%FF%99%FF)^(%FF%96%FF)^(%FF%FF%FF))(((%8D%9E%9E%9E%9B%96%8D)^(%9A%9B%FF%99%FF%FF%FF)^(%9B%99%FF%96%FF%FF%FF)^(%FF%FF%FF%FF%FF%FF%FF))(%D1^%FF)));

异或0xff=取反