#28464 [Opn->Csd]: catch() does not catch exceptions by interfaces

ID: 28464 Updated by: helly@php.net Reported By: d at koteroff dot ru -Status: Open +Status: Closed Bug Type: Zend Engine 2 problem Operating System: * -PHP Version: 5CVS-2004-05-21 (dev) +PHP Version: 5.0.0 -Assigned To: +Assigned To: helly New Comment: This bug has been fixed in CVS. Snapshots of the sources are packaged every three hours; this change will be in the next snapshot. You can grab the snapshot at http://snaps.php.net/. Thank you for the report, and for helping us make PHP better. Previous Comments: ------------------------------------------------------------------------ [2004-06-22 01:55:39] php at koteroff dot ru Still waiting. :-) Thanks for RC3. ------------------------------------------------------------------------ [2004-05-21 02:03:15] d at koteroff dot ru Description: ------------ Seems PHP does not support exception catching by parent interface (not by parent classes). Why? This is a very powerful method to classify exceptions in programs. Documentation says that while comparing type in catch block 'instanceof' operator is used, but following test shows that it is wrong. I found corresponding code in the source, zend_execute.c:2866, and it searches for parent classes only. Why not use instanceof_function? Do you have any perspectives about this problem? Can I wrote in my book that PHP will support "interface catching" in the future? Reproduce code: --------------- <? interface E {} class A extends Exception implements E {} try { throw new A(); } catch (E $e) { echo $e; } ?> Expected result: ---------------- prints exception data Actual result: -------------- Fatal error: Uncaught exception ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=28464&edit=1