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run code in 300+ PHP versions simultaneously
<?php class Foo { private $foo; public function __debuginfo() { return ['foo' => 'bar']; } public function __sleep() { $this->herp = 'derp'; return ['herp', 'merp']; } } var_dump(json_encode(new Foo()));

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33.77 ms | 402 KiB | 5 Q