3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php error_reporting(E_ALL); session_id('iqkiro6bpqrg939r9b43'); session_start();
Output for 5.2.3 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Output for 4.3.2 - 5.2.2
Warning: session_start(): Cannot send session cookie - headers already sent in /in/E9iec on line 4 Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /in/E9iec:4) in /in/E9iec on line 4
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/E9iec on line 4 Warning: session_start() [http://www.php.net/function.session-start]: Cannot send session cache limiter - headers already sent (output started at /in/E9iec:4) in /in/E9iec on line 4