3v4l.org

run code in 300+ PHP versions simultaneously
<?php interface InterfaceY { public function y(): string; } trait TraitY { public function y(): string { } } class X { public function y(): string { } } class Y extends X implements InterfaceY { use TraitY; }
Output for 7.3.32 - 7.3.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; Y has a deprecated constructor in /in/lG7t4 on line 17
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Parse error: syntax error, unexpected ':', expecting ';' or '{' in /in/lG7t4 on line 4
Process exited with code 255.

preferences:
162.37 ms | 402 KiB | 212 Q