3v4l.org

run code in 300+ PHP versions simultaneously
<?php interface Foo {} class Bar {} class Qux implements Foo {} $bars = [new Bar(), new Bar()]; $quxs = [new Qux(), new Qux()]; usort($bars, function(Foo $a, Foo $b) { return 0; }) var_dump($bars);
Output for 5.5.24 - 5.5.30, 5.6.8 - 5.6.16, 7.0.0 - 7.0.1
Parse error: syntax error, unexpected 'var_dump' (T_STRING) in /in/YU6Qo on line 14
Process exited with code 255.
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167.98 ms | 1395 KiB | 25 Q