--TEST-- Closure 018: Assigning lambda to static var and returning by ref --FILE-- <?php class foo { public function test(&$x) { static $lambda; $lambda = function &() use (&$x) { return $x = $x * $x; }; return $lambda(); } } $test = new foo; $y = 2; var_dump($test->test($y)); var_dump($x = $test->test($y)); var_dump($y, $x); ?> --EXPECTF-- Notice: Only variable references should be returned by reference in %sclosure_018.php on line 7 int(4) Notice: Only variable references should be returned by reference in %sclosure_018.php on line 7 int(16) int(16) int(16)