note 107874 deleted from session.examples.basic by danbrown

Note Submitter: Ray dot Paseur at Gmail dot com ---- To add to the sagacious comment from anonymous at #107788, the $_SESSION array should be immutable until after session_start() has been executed successfully. But it is not. PHP will silently allow the script to put information into the "session" array even when the session has not been started. This is a source of frequent confusion, such as when a programmer accidentally omits session_start() or places session_start() inside a conditional logic structure.