validateid

SessionUpdateTimestampHandlerInterface::validateId

Validate ID

ENTITY

Validates a given session ID. A session ID is valid, if a session with that ID already exists. This function is automatically executed when a session is to be started, a session ID is supplied and session.use_strict_mode is enabled.

ENTITY

id
The session ID.

ENTITY

Returns ENTITY for valid ID, ENTITY otherwise. Note that this value is returned internally to PHP for processing.