Problem with session files

php filesize() function is Returns the size of the file in bytes, or false (and generates an error of level E_WARNING) in case of an error.

Ref: https://www.php.net/manual/en/function.filesize.php

# Reason of error: I found two main reason of this error:
1. File doesn’t exist
2. File exist but file size is larger than 2GB which that’s why filesize() function can’t read that file.

I found a problem in code codeigniter session driver source code “Session_files_driver.php”.There is no file_exists () Checks whether a file or directory exists on the directory.
Please have a look on the system/libraries/Session/drivers/Session_files_driver.php line no 208

for ($read = 0, $length = filesize($this->_file_path.$session_id); $read < $length;

I think the there should have checking if the file exist before try to read the file.

# Solution:
1. Set absolute path on session file

$config['sess_driver'] = 'files';
//$config['sess_save_path'] = NULL;
$config['sess_save_path'] = '/var/lib/php/sessfiles/';

2. Correct the session driver source code:

if (file_exists($this->_file_path.$session_id)) {
for ($read = 0, $length = filesize($this->_file_path.$session_id); $read < $length; $read += self:trlen($buffer))
{
if (($buffer = fread($this->_file_handle, $length - $read)) === FALSE)
{
break;
}

$session_data .= $buffer;
}
}


Hope this will help you to solve this problem.
Thank you

Every Problem Must have a Solution