Predefined Constants
Predefined Constants
The constants below are defined by this extension, and
will only be available when the extension has either
been compiled into PHP or dynamically loaded at runtime.
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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().
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PHP_SESSION_DISABLED
(int)
-
Since PHP 5.4.0. Return value of session_status() if sessions are disabled.
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PHP_SESSION_NONE
(int)
-
Since PHP 5.4.0. Return value of session_status() if sessions are enabled,
but no session exists.
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PHP_SESSION_ACTIVE
(int)
-
Since PHP 5.4.0. Return value of session_status() if sessions are enabled,
and a session exists.