3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?hh echo ($a = (($x) ==> $x + 1) )(3);
based on A2C1Q
Output for hhvm-3.12.0
4
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.4.34
Parse error: syntax error, unexpected 'echo' (T_ECHO) in /in/Mq8hn on line 3
Process exited with code 255.
Output for 5.4.0 - 5.4.32
<?hh echo ($a = (($x) ==> $x + 1) )(3);