Class CI_Session_files_driver contains 1 abstract method and must therefore be declared abstract or implement the remaining methods

Question

I have some problems with CodeIgniter, this error is from system file and I don't know how to fix it.

    Fatal error: Class CI_Session_files_driver contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (SessionHandlerInterface::read) in E:\Xampp\htdocs\Yachi\system\libraries\Session\drivers\Session_files_driver.php on line 49
    A PHP Error was encountered

    Severity: Error

    Message: Class CI_Session_files_driver contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (SessionHandlerInterface::read)

    Filename: drivers/Session_files_driver.php

    Line Number: 49

    Backtrace:

I read some articles about this, but it doesn't help to find out the answer. Thanks.

Check following link https://www.codeigniter.com/user_guide/libraries/sessions.html#database-driver — , Jul 12 '17 at 08:02
What is your actual setup with sessions. Can you post your session config data. What version of CI and what version of PHP are you running on. — TimBrownlaw, Jul 12 '17 at 09:02
Sorry because of the delay, I just set up session_driver with files, I use CodeIgniter 3.1.5 and PHP 7.1.4. If I change session_driver as database, it will be more errors. — Tai Le, Jul 12 '17 at 09:59
Possible duplicate of [Fatal error: Class CI\_Session\_files\_driver contains 1 abstract method](https://stackoverflow.com/questions/34896271/fatal-error-class-ci-session-files-driver-contains-1-abstract-method) — TimBrownlaw, Jul 13 '17 at 10:13
I read this article but I don't know how to fix, what should I fix? — Tai Le, Jul 13 '17 at 10:27

user1386890 · Accepted Answer · 2017-10-12T05:32:04.613

The bug seems about windows+php7. Not for CI

Restarting apache server can be a temporary solution. But you should repeat it every time crash happen.

I recommend to use linux enviornment or Downgrade php version to 5.x until it solve.

Class CI_Session_files_driver contains 1 abstract method and must therefore be declared abstract or implement the remaining methods

1 Answers1