3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php interface I { } interface C extends I { } interface BI { function x(); } class BC implements BI { function x(): C { } }
based on GmCYq
Output for hhvm-3.15.4, 7.0.0 - 7.2.6
Output for 5.6.0 - 5.6.30
Parse error: syntax error, unexpected ':', expecting ';' or '{' in /in/3t7e5 on line 14
Process exited with code 255.