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<?php class Test1 { public function __construct(&$x){ ++$x; echo "You sent me $x\n"; } } $a = 8; $o = new Test1($b = $a); var_dump($b,$b == $GLOBALS['b']); class Test2 { public function __construct(&$x){ ++$x; echo "You sent me $x\n"; } } $a = 8; $o = new Test2($b = &$a); var_dump($b,$b == $GLOBALS['b']);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Test1::__construct(): Argument #1 ($x) cannot be passed by reference in /in/EA0qZ:9 Stack trace: #0 {main} thrown in /in/EA0qZ on line 9
Process exited with code 255.

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