--TEST-- Closure 019: Calling lambda using $GLOBALS and global $var --FILE-- <?php $lambda = function &(&$x) { return $x = $x * $x; }; function test() { global $lambda; $y = 3; var_dump($GLOBALS['lambda']($y)); var_dump($lambda($y)); var_dump($GLOBALS['lambda'](1)); } test(); ?> --EXPECTF-- Notice: Only variable references should be returned by reference in %sclosure_019.php on line 4 int(9) Notice: Only variable references should be returned by reference in %sclosure_019.php on line 4 int(81) Fatal error: Cannot pass parameter 1 by reference in %s on line %d