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run code in 300+ PHP versions simultaneously
<?php class Foo { public static function x() { return 'x'; } } class Bar extends Foo { private $meep = 'y'; public static function x() { return $this->meep; } } var_dump(Foo::x()); var_dump((new Bar)->x());

preferences:
40.33 ms | 402 KiB | 5 Q