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<?php $function = function (int &$foo) {}; $foo = 1; $args = [&$foo]; unset($foo); $args = [...$args]; # OK // $function(...$args); // if it is uncommented, then code below will not throw warnings # WARNING (new ReflectionFunction($function))->invokeArgs($args); # WARNING call_user_func_array($function, $args);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: {closure}(): Argument #1 ($foo) must be passed by reference, value given in /in/34QmH on line 15 Warning: {closure}(): Argument #1 ($foo) must be passed by reference, value given in /in/34QmH on line 18

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