3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php class A { const B = ['a', 'b']; } echo isset(A::B[0]) ? 1 : 0;
based on Z9rQX
Output for 7.0.0 - 7.2.0
1
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/JXUWd on line 8
Process exited with code 255.
Output for 5.4.2 - 5.5.35
Fatal error: Arrays are not allowed in class constants in /in/JXUWd on line 5
Process exited with code 255.
Output for 5.3.18 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/JXUWd on line 5
Process exited with code 255.