3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo $a = $b ?? "test";
based on SZNnH
Output for 7.0.0 - 7.2.0
test
Output for 5.3.21 - 5.6.28
Parse error: syntax error, unexpected '?' in /in/qip49 on line 3
Process exited with code 255.