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run code in 300+ PHP versions simultaneously
<?php class Foo { public function __get($prop) { return 'foo'; } } class Bar { public function __get($prop) { return 'bar'; } public function __isset($prop) { return true; } } $foo = new Foo(); var_dump(empty($foo->baz)); $bar = new Bar(); var_dump(empty($bar->baz));

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24.66 ms | 404 KiB | 5 Q