Costanti predefinite

Queste costanti sono definite da questa estensione e sono disponibili solo se l'estensione è stata compilata nel PHP o se è stata caricata dinamicamente a runtime.

SID (string)

Constant containing either the session name and session ID in the form of "name=ID" or empty string if session ID was set in an appropriate session cookie. This is the same id as the one returned by session_id().

PHP_SESSION_DISABLED (int)

Since PHP 5.4.0. Return value of session_status() if sessions are disabled.

PHP_SESSION_NONE (int)

Since PHP 5.4.0. Return value of session_status() if sessions are enabled, but no session exists.

PHP_SESSION_ACTIVE (int)

Since PHP 5.4.0. Return value of session_status() if sessions are enabled, and a session exists.