3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php class C { const XXX = 'xxx'; const YYY = [ self::XXX => '123', ]; } var_dump(C::YYY);
Output for 5.6.8 - 7.2.0
array(1) { ["xxx"]=> string(3) "123" }
Output for 5.4.0 - 5.5.35
Fatal error: Arrays are not allowed in class constants in /in/drL3o on line 9
Process exited with code 255.
Output for 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/drL3o on line 7
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/drL3o on line 7
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_CONST, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/drL3o on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_CONST, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/drL3o on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/drL3o on line 5
Process exited with code 255.