CI_Session_files_driver
===============

CodeIgniter Session Files Driver




* Class name: CI_Session_files_driver
* Namespace: 
* Parent class: [CI_Session_driver](CI_Session_driver.md)
* This class implements: [SessionHandlerInterface](SessionHandlerInterface.md)




Properties
----------


### $_save_path

    protected string $_save_path

Save path



* Visibility: **protected**


### $_file_handle

    protected resource $_file_handle

File handle



* Visibility: **protected**


### $_file_path

    protected resource $_file_path

File name



* Visibility: **protected**


### $_file_new

    protected boolean $_file_new

File new flag



* Visibility: **protected**


### $_config

    protected mixed $_config





* Visibility: **protected**


### $_fingerprint

    protected boolean $_fingerprint

Data fingerprint



* Visibility: **protected**


### $_lock

    protected mixed $_lock = FALSE

Lock placeholder



* Visibility: **protected**


### $_session_id

    protected string $_session_id

Read session ID

Used to detect session_regenerate_id() calls because PHP only calls
write() after regenerating the ID.

* Visibility: **protected**


Methods
-------


### __construct

    void CI_Session_driver::__construct(array $params)

Class constructor



* Visibility: **public**
* This method is defined by [CI_Session_driver](CI_Session_driver.md)


#### Arguments
* $params **array** - <p>Configuration parameters</p>



### open

    mixed SessionHandlerInterface::open($save_path, $name)





* Visibility: **public**
* This method is defined by [SessionHandlerInterface](SessionHandlerInterface.md)


#### Arguments
* $save_path **mixed**
* $name **mixed**



### read

    mixed SessionHandlerInterface::read($session_id)





* Visibility: **public**
* This method is defined by [SessionHandlerInterface](SessionHandlerInterface.md)


#### Arguments
* $session_id **mixed**



### write

    mixed SessionHandlerInterface::write($session_id, $session_data)





* Visibility: **public**
* This method is defined by [SessionHandlerInterface](SessionHandlerInterface.md)


#### Arguments
* $session_id **mixed**
* $session_data **mixed**



### close

    mixed SessionHandlerInterface::close()





* Visibility: **public**
* This method is defined by [SessionHandlerInterface](SessionHandlerInterface.md)




### destroy

    mixed SessionHandlerInterface::destroy($session_id)





* Visibility: **public**
* This method is defined by [SessionHandlerInterface](SessionHandlerInterface.md)


#### Arguments
* $session_id **mixed**



### gc

    mixed SessionHandlerInterface::gc($maxlifetime)





* Visibility: **public**
* This method is defined by [SessionHandlerInterface](SessionHandlerInterface.md)


#### Arguments
* $maxlifetime **mixed**



### _cookie_destroy

    boolean CI_Session_driver::_cookie_destroy()

Cookie destroy

Internal method to force removal of a cookie by the client
when session_destroy() is called.

* Visibility: **protected**
* This method is defined by [CI_Session_driver](CI_Session_driver.md)




### _get_lock

    boolean CI_Session_driver::_get_lock(string $session_id)

Get lock

A dummy method allowing drivers with no locking functionality
(databases other than PostgreSQL and MySQL) to act as if they
do acquire a lock.

* Visibility: **protected**
* This method is defined by [CI_Session_driver](CI_Session_driver.md)


#### Arguments
* $session_id **string**



### _release_lock

    boolean CI_Session_driver::_release_lock()

Release lock



* Visibility: **protected**
* This method is defined by [CI_Session_driver](CI_Session_driver.md)