Applying Codeigniter 3 to a new domain host gives mkdir() error for session_files_drive.php

Question

I have a Codeigniter framework setup that I move cross multiple domain setups as a default starting point. It gives me the below error. It is the same when I added a clean insta

Answer 1

If you use Codeigniter's /default) file session storage driver, you need to keep in mind that it only supports absolute paths for $config['sess_save_path']

the config.php states:

|   The location to save sessions to, driver dependent.
|
|   For the 'files' driver, it's a path to a writable directory.
|   WARNING: Only absolute paths are supported!
|
|   For the 'database' driver, it's a table name.
|   Please read up the manual for the format with other session drivers.
|
|   IMPORTANT: You are REQUIRED to set a valid save path!

depending on your environment use these:

mkdir /<path to your application directory>/sessions/

chmod 0700 /<path to your application directory>/sessions/

chown www-data /<path to your application directory>/sessions/

or

$config['sess_save_path'] = sys_get_temp_dir(); 
//php function which returns the directory path used for temporary files

more info on CI-sessions files driver

P.S. have a look at Session_files_driver.php (in your system/session/driver directory). There you see their use of mkdir in line 136: if ( ! mkdir($save_path, 0700, TRUE))=>>through error if dir is not writable)