session_status
PHP 5 >= 5.4.0, PHP 7, PHP 8
session_status - Returns the current session status
Manual
session_status(
session_status is used to return the current session status.
Parameters
This function has no parameters.
Return Values
PHP_SESSION_DISABLED if sessions are disabled.
PHP_SESSION_NONE if sessions are enabled, but none exists.
PHP_SESSION_ACTIVE if sessions are enabled, and one exists.