3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php const FOO = ['a', 'b', 'c']; var_dump(isset(FOO[1]));
Output for 7.0.0 - 7.2.0
bool(true)
Output for 5.6.8 - 5.6.28
Fatal error: Cannot use isset() on the result of an expression (you can use "null !== expression" instead) in /in/EimZP on line 4
Process exited with code 255.
Output for 5.4.11 - 5.5.35
Fatal error: Arrays are not allowed as constants in /in/EimZP on line 2
Process exited with code 255.
Output for 5.3.21 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/EimZP on line 2
Process exited with code 255.