3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump (1 ?? 2 ?? 3);
Output for 7.0.0 - 7.2.0
int(1)
Output for 5.3.21 - 5.6.21
Parse error: syntax error, unexpected '?' in /in/9Fr6m on line 3
Process exited with code 255.