#49772 [Opn->Csd]: Cast operators marked as non-associative

ID: 49772 Updated by: vrana@php.net Reported By: mjomble at gmail dot com -Status: Open +Status: Closed Bug Type: Documentation problem Operating System: Windows PHP Version: Irrelevant New Comment: This bug has been fixed in the documentation's XML sources. Since the online and downloadable versions of the documentation need some time to get updated, we would like to ask you to be a bit patient. Thank you for the report, and for helping us make our documentation better. Previous Comments: ------------------------------------------------------------------------ [2009-11-13 21:40:36] svn@php.net Automatic comment from SVN on behalf of vrana Revision: http://svn.php.net/viewvc/?view=revision&revision=290705 Log: Some unary operators are associative (bug #49772) ------------------------------------------------------------------------ [2009-10-04 23:00:43] mjomble at gmail dot com Description: ------------ The operator precedence page (language.operators.precedence.php) lists the following operators as non-associative: ~ - (int) (float) (string) (array) (object) (bool) @ However, all of these seem to behave like right-associative operators. Examples: - - 3 evaluates like -(-3)) = 3 ~ ~ 3 evaluates like ~(~3)) = 3 - - - 3 evaluates like -(-(-3))) = -3 ~ ~ ~ 3 evaluates like ~(~(~3))) = ~3 = -4 (int) (string) 3 evaluates to integer 3 (string) (int) 3 evaluates to string "3" It's even possible to use the @ operator more than once in front of a statement. The additional ones don't really do anything useful, but more importantly, they don't trigger any parse errors. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=49772&edit=1