验证码-php登录验证吗错误，，Warning:Unknown:Faile

Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (C:/Windows/Temp) in Unknown on line 0，，，，现在网上找了，，，说是修改php.ini session.save_path,,,可是修改了，，不起作用，，还把权限，，，session.save_path路径的权限最高，，，还是不行啊，，，，求高手指教？？？？？？