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<?php session_start(); $old_sessionid = session_id(); session_regenerate_id(); $new_sessionid = session_id(); var_dump($old_sessionid === $new_sessionid);
Output for 5.2.3 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
bool(false)
Output for 7.3.33
Warning: session_start(): open(/tmp/sess_0d3658c4b3e1f45e66c679681c827f55, O_RDWR) failed: No space left on device (28) in /in/4kXsa on line 2 Warning: session_start(): Failed to read session data: files (path: ) in /in/4kXsa on line 2 Warning: session_regenerate_id(): Cannot regenerate session id - session is not active in /in/4kXsa on line 6 bool(true)
Output for 7.3.32
Warning: session_start(): open(/tmp/sess_2bf0db3c2a5ea29f0f312ee33d18790f, O_RDWR) failed: No space left on device (28) in /in/4kXsa on line 2 Warning: session_start(): Failed to read session data: files (path: ) in /in/4kXsa on line 2 Warning: session_regenerate_id(): Cannot regenerate session id - session is not active in /in/4kXsa on line 6 bool(true)
Output for 4.4.3 - 4.4.9, 5.2.0 - 5.2.2
Warning: session_start(): Cannot send session cookie - headers already sent in /in/4kXsa on line 2 Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /in/4kXsa:2) in /in/4kXsa on line 2 Warning: session_regenerate_id(): Cannot regenerate session id - headers already sent in /in/4kXsa on line 6 bool(true)
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.2, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Warning: session_start(): Cannot send session cookie - headers already sent in /in/4kXsa on line 2 Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /in/4kXsa:2) in /in/4kXsa on line 2 Warning: session_regenerate_id(): Cannot send session cookie - headers already sent by (output started at /in/4kXsa:2) in /in/4kXsa on line 6 bool(false)
Output for 4.3.0 - 4.3.1
Warning: session_start() [http://www.php.net/function.session-start]: Cannot send session cookie - headers already sent in /in/4kXsa on line 2 Warning: session_start() [http://www.php.net/function.session-start]: Cannot send session cache limiter - headers already sent (output started at /in/4kXsa:2) in /in/4kXsa on line 2 Fatal error: Call to undefined function: session_regenerate_id() in /in/4kXsa on line 6

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