Bug #62059 [Com]: ArrayObject and isset are not friends.

Edit report at https://bugs.php.net/bug.php?id=62059&edit=1 ID: 62059 Comment by: roberts at x0 dot lv Reported by: julien at palard dot fr Summary: ArrayObject and isset are not friends. Status: Open Type: Bug Package: SPL related Operating System: Linux 2.6.32-5-amd64 PHP Version: Irrelevant Block user comment: N Private report: N New Comment: Confirmed present in 5.3.3-7 and 5.4.7-7, and 5.4.8-1 Previous Comments: ------------------------------------------------------------------------ [2012-05-18 15:22:30] julien at palard dot fr Description: ------------ The doc state that isset() is not a function, so that it can do weird things like deep inspection, without raising a NOTICE about 'b' being undefined : $a = array(); isset($a['b']['c']); But if $a is an ArrayObject, the deep inspection does not work and a "Undefined index 'b'" NOTICE is triggered. But I found a __isset() in the documentation, (http://www.php.net/manual/en/language.oop5.overloading.php#object.isset) it have a very concise documentation but it seems a sufficient convention to make this work : I think that isset should call __isset() from left to right returning FALSE at the 1st non set member, like this : $a = SomeObject(); isset($a['b']['c']['d']['e']); should call : $a->__isset('b'), that should return FALSE, and stop here, wihout NOTICE. Test script: --------------- echo "isset on array, work without notice\n"; $array = array(); var_dump(isset($array['a']['b'])); echo "isset on arrayobject, should work as ArrayObject implements __isset\n"; $arrayobject = new ArrayObject(); var_dump(isset($arrayobject['a']['b'])); Expected result: ---------------- isset on array, work without notice bool(false) isset on arrayobject, should work as ArrayObject implements __isset bool(false) Actual result: -------------- isset on array, work without notice bool(false) isset on arrayobject, should work as ArrayObject implements __isset PHP Notice: Undefined index: a in test.php on line 10 Notice: Undefined index: a in test.php on line 10 bool(false) ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=62059&edit=1