Message: Return type of CI_Session_files_driver::open($save_path, $name) should either be compatible with

我在安装了新的xampp版本(php8)后出现了这个错误，并克隆了我的codeigniter项目。

Message: Return type of CI_Session_files_driver::open($save_path, $name)
should either be compatible with SessionHandlerInterface::open(string $path, string $name):
bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice

文件名是：drivers/Session_files_driver.php

行号：132

对于其他遇到这个错误的人，我在升级到PHP8.1后也遇到了这个错误。我能找到的唯一方法是在/system/libraries/Session/drivers/Session_files_driver.php中的open、read、write、close、destroy和gc函数前加上#[\ReturnTypeWillChange]来解决。比如说。

#[\ReturnTypeWillChange]
public function open($save_path, $name)
{
...

我在重新安装XAMPP服务器后遇到这个错误。我已经通过添加以下内容解决了这个问题

#[\ReturnTypeWillChange]

为Session_files_driver.php file中的所有方法（open, read, write, close, destroy and gc）。该文件可以在项目文件夹system/libaries/Session/drivers/Session_files_driver.php中找到。

#[\ReturnTypeWillChange]
public function open($save_path, $name)
{
   ...
}

#[\ReturnTypeWillChange]
public function read($session_id)
{
  ...
}

#[\ReturnTypeWillChange]
public function write($session_id, $session_data)
{
  ...
}

#[\ReturnTypeWillChange]
public function close()
{
  ...
}

#[\ReturnTypeWillChange]
public function destroy($session_id)
{
  ...
}

#[\ReturnTypeWillChange]
public function gc($maxlifetime)
{
  ...
}