#50184 [Opn->Tbd]: Constants can be redefined

ID: 50184 Updated by: jani@php.net Reported By: goatlabs at gmail dot com -Status: Open +Status: To be documented -Bug Type: *Programming Data Structures +Bug Type: Scripting Engine problem Operating System: OSX 10.6.2; Debian Linux 5.0.3 PHP Version: 5.3.0 New Comment: From manual notes: A note on redefining: Constants can't be redefined: $ php -r "define('A', 1); var_dump('A'); define('A', 2); var_dump('A');"; string(1) "A" PHP Notice: Constant A already defined in Command line code on line 1 string(1) "A" But using the case insensitive setting shows that the internal representation is lower case: $ php -r "define('A', 1, true); var_dump('A'); define('A', 2); var_dump('A');"; string(1) "A" string(1) "A" Note the lower case 'a' in the second define() here: $ php -r "define('A', 1, true); var_dump('A'); define('a', 2); var_dump('A');"; string(1) "A" PHP Notice: Constant a already defined in Command line code on line 1 string(1) "A" (Short version: Yes, but no) Previous Comments: ------------------------------------------------------------------------ [2009-11-16 03:59:24] goatlabs at gmail dot com Note: the description should read: define() constants can be modified if originally defined "case-INsensitive" ------------------------------------------------------------------------ [2009-11-16 01:44:49] goatlabs at gmail dot com Description: ------------ define() constants can be modified if originally defined case-sensitive Reproduce code: --------------- define('TEST', 'foo', true); var_dump(TEST); define('TEST', 'bar'); var_dump(TEST); Expected result: ---------------- string(3) "foo" string(3) "foo" Actual result: -------------- string(3) "foo" string(3) "bar" ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=50184&edit=1