Online PHP editor | refs for 0NKlW

<?php $possible0 = explode(',', 'hello, world', -100); $possible1 = explode(',', 'hello, world', -1); $possible2 = explode(',', 'hello, world', 0); $possible3 = explode(',', 'hello, world', 1); $possible4 = explode(',', 'hello, world', 2); $possible5 = explode(',', 'hello, world', 3); $possible6 = explode(',', 'hello, world', 4); try { $impossible1 = explode('', '', -1); } catch (Throwable $impossible1) {} $traced = [$possible0, $possible1, $possible2, $possible3, $possible4, $possible5, $possible6, $impossible1]; /** @psalm-trace $traced */ var_dump($traced); return $traced;