3v4l.org

run code in 500+ PHP versions simultaneously
<?php class Foo { public function doFoo(int &$e) { try { throw new \Exception(); } catch (\Exception $e) { } } } $foo = new Foo(); $a = 1; $foo->doFoo($a); var_dump($a);

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53.21 ms | 517 KiB | 5 Q