CodeIgniter Cookie Management

A cookie is a piece of information contained in a very small text file that is stored in your Internet browser or elsewhere on your hard drive. Cookies allow a website to identify a user's device whenever that user returns to the website and are commonly used in order to make websites work more efficiently.

Cookie Helper

The Codeigniter Cookie Helper file contains functions that assist in working with cookies.

• Loading Codeigniter Cookie Helper
• Available Codeigniter Cookie Functions

Loading Codeigniter Cookie Helper

This helper is loaded using the following code:

$this->load->helper('cookie');

Available Codeigniter Cookie Functions

The following functions are available:

• set_cookie(some argument)
• get_cookie(some argument)
• delete_cookie(some argument)

set_cookie(cookie_name,cookie_value,cookie_expire,cookie_secure);

Parameters: 

• $name (mixed) – Cookie name or associative array of all of the parameters available to this function
• $value (string) – Cookie value
• $expire (int) – Number of seconds until expiration
• $domain (string) – Cookie domain (usually: .yourdomain.com)
• $path (string) – Cookie path
• $prefix (string) – Cookie name prefix
• $secure (bool) – Whether to only send the cookie through HTTPS
• $httponly (bool) – Whether to hide the cookie from JavaScript

set_cookie('cookie_name','cookie_value','3600'); 

Return type:void

This Codeigniter helper function gives you friendlier syntax to set browser cookies. Refer to the Input Library for a description of its use, as this function is an alias for

get_cookie(cookie_name)

Parameters: 

• $index (string) – Cookie name
• $xss_clean (bool) – Whether to apply XSS filtering to the returned value

Returns:  The cookie value or NULL if not found

Return type:mixed

echo get_cookie('cookie_name'); 

delete_cookie(cookie_name)

Parameters: 

• $name (string) – Cookie name
• $domain (string) – Cookie domain (usually: .yourdomain.com)
• $path (string) – Cookie path
• $prefix (string) – Cookie name prefix

Return type:void

Lets you delete a cookie. Unless you’ve set a custom path or other values, only the name of the cookie is needed.

delete_cookie('cookie_name');