3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php class foo { const BAR = [1,2,3]; function foobar() { var_dump(isset(BAR[1])); } }
Output for 7.0.0 - 7.2.0
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/E29j1 on line 8
Process exited with code 255.
Output for 5.4.11 - 5.5.35
Fatal error: Arrays are not allowed in class constants in /in/E29j1 on line 4
Process exited with code 255.
Output for 5.3.21 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/E29j1 on line 4
Process exited with code 255.