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run code in 200+ php & hhvm versions
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<?php class Test { public function foo() { return ++$this; } } $t = new Test(); var_dump($t->foo());
Output for 5.6.0 - 5.6.30, hhvm-3.18.5 - 3.22.0, 7.0.0 - 7.2.6
object(Test)#1 (0) { }