Upgrading from 3.1.5 to 3.1.6¶
Before performing an update you should take your site offline by replacing the index.php file with a static one.
Step 1: Update your CodeIgniter files¶
Replace all files and directories in your system/ directory.
If you have any custom developed files in these directories, please make copies of them first.
Step 2: Remove usage of the APC Cache driver (deprecation)¶
If your application happens to be using it, you can switch to another cache driver, as APC support will be removed in a future CodeIgniter version.
The driver is still available, but you’re strongly encouraged to remove its usage sooner rather than later.