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run code in 300+ PHP versions simultaneously
<?php class A { public $b = 'B'; } class B { public static $c = 'Hello world!'; } $a = new A; var_dump(${${$a->b} = $a->b}::$c); // about as close to $a->b::$c you can get

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36.38 ms | 402 KiB | 5 Q