3v4l.org

run code in 300+ PHP versions simultaneously
<?php interface foo { function bar(array $x); } class baz implements foo{ function bar(baz $x); }
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.25
Fatal error: Non-abstract method baz::bar() must contain body in /in/Lfldo on line 7
Process exited with code 255.
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190.67 ms | 940 KiB | 63 Q