3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo "a".(isset(true)?'b':'c');
Output for 5.6.30, 7.0.0 - 7.2.9
Fatal error: Cannot use isset() on the result of an expression (you can use "null !== expression" instead) in /in/FmVV4 on line 3
Process exited with code 255.
Output for hhvm-3.15.4 - 3.22.0
ab