ID: 47080 Updated by: tony2...@php.net Reported By: foddex at foddex dot net -Status: Open +Status: Bogus Bug Type: Scripting Engine problem Operating System: Linux Fedora 9 PHP Version: 5.2.8 New Comment:
Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php "A reference" means several variables share the same value. http://www.php.net/manual/en/language.references.whatare.php Previous Comments: ------------------------------------------------------------------------ [2009-01-12 14:20:19] foddex at foddex dot net Description: ------------ When a class member variable gets returned by reference, the member variable itself turns into a reference. See the URL below for more detailed information (it contains a lot of comments). The basic idea is: class A { var $foo; function &get() { return $this->foo; } } If we clone an instance of A when get() hasn't been returned yet, the value of $foo gets cloned. If we call get(), and then clone the instance of A, the cloned object references the same data as the original! This might be logical because it had become a reference, but this behavior is not documented and thus pretty unexpected, IMHO. Reproduce code: --------------- http://pastebin.be/16008 Expected result: ---------------- object(A)#1 (1) { ["foo"]=> int(42) } int(42) int(43) int(42) object(A)#1 (1) { ["foo"]=> int(43) } Actual result: -------------- object(A)#1 (1) { ["foo"]=> int(42) } int(42) int(43) int(43) object(A)#1 (1) { ["foo"]=> &int(43) } ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=47080&edit=1
