Returns true or false if current page is a command shift r preview (html preview link)
HTTP GET variables
Get request body
HTTP POST variables
Get an argument provided in the request by user
Information about current requested URL
Redirect the current request to another URL
Stop the application and serve the given $data or use the buffer if non given
Calls session open and read.
Calls session write.
Destroys session saved in the database, the session variable, as well as any related cookies.
Cookies are a mechanism for storing data in the remote browser and thus tracking or identifying return users. Cookies are part of the HTTP header, so request:set_cookie() must be called before any output is sent to the browser.
Get the cookies that are getting set on the server side for this request.
Unset a cookie by name.