3v4l.org

run code in 300+ PHP versions simultaneously
<?php session_start(); $session = &$_SESSION; $session['test'] = 1; session_regenerate_id(false); $session['test'] = 2; // dumps false, should be true var_dump($session['test'] === $_SESSION['test']);
Output for 5.2.3 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.28, 7.4.0 - 7.4.22, 8.0.0 - 8.0.8
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/PRhdj on line 3 Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /in/PRhdj:3) in /in/PRhdj on line 3 Warning: session_regenerate_id(): Cannot regenerate session id - headers already sent in /in/PRhdj on line 8 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/PRhdj on line 3 Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /in/PRhdj:3) in /in/PRhdj on line 3 Warning: session_regenerate_id(): Cannot send session cookie - headers already sent by (output started at /in/PRhdj:3) in /in/PRhdj on line 8 bool(true)
Output for 4.3.1
Warning: session_start() [http://www.php.net/function.session-start]: Cannot send session cookie - headers already sent in /in/PRhdj on line 3 Warning: session_start() [http://www.php.net/function.session-start]: Cannot send session cache limiter - headers already sent (output started at /in/PRhdj:3) in /in/PRhdj on line 3 Fatal error: Call to undefined function: session_regenerate_id() in /in/PRhdj on line 8

preferences:
378.34 ms | 464 KiB | 5 Q