Edit report at http://bugs.php.net/bug.php?id=51622&edit=1
ID: 51622 Updated by: col...@php.net Reported by: oliver dot graetz at gmx dot de -Summary: ArrayObject shows inconsistent behaviour +Summary: ArrayObject::offsetGet should return a reference Status: Open -Type: Bug +Type: Feature/Change Request Package: SPL related PHP Version: 5.2.13 New Comment: This is actually a feature request. To be backward compatible, we would need to have a new interface, and obviously a new interface only to solve that reference thing is painful. The immediate solution is to return an ArrayObject itself, which means that indirect modifications will work. Previous Comments: ------------------------------------------------------------------------ [2010-04-21 13:35:50] oliver dot graetz at gmx dot de Description: ------------ This bug refers to my report filed under http://bugs.php.net/bug.php?id=34783 which is now more than four years old. In the meantime I found out that using ArrayObject instead of the test class the $t['huba'][]='three'; actually works, thanks to the SPL using its "implemented in C advantage" to circumvent the problem. Actually, it works until the programmer decides to inherit from ArrayObject and overwrite offsetGet(). Then the problem of the offsetGet() method not returning by reference is back. Back in 2005 you were very quick to flag the report as BOGUS, but a look at the source code of "zend_interfaces.c" proves that there is in fact a problem: ZEND_BEGIN_ARG_INFO_EX(arginfo_arrayaccess_offset_get, 0, 0, 1) /* actually this should be return by ref but atm cannot be */ The best way of dealing with this is not to mark it as BOGUS and deny that there is a problem. It would be admitting the fault and perhaps introducing an alternative NewArrayAccess interface that defines &offsetGet(). So future code can use it without breaking old implementations. Test script: --------------- <?php class Test1 extends ArrayObject { } class Test2 extends ArrayObject { function offsetGet($key) { return parent::offsetGet($key); } } $t1 = new Test1(); $t1['huba'] = array('one','two'); $t1['huba'][] = 'three'; print_r($t1); $t2 = new Test2(); $t2['huba'] = array('one','two'); $t2['huba'][] = 'three'; print_r($t2); Expected result: ---------------- Test1 Object ( [huba] => Array ( [0] => one [1] => two [2] => three ) ) Test2 Object ( [huba] => Array ( [0] => one [1] => two [2] => three ) ) Actual result: -------------- Test1 Object ( [huba] => Array ( [0] => one [1] => two [2] => three ) ) Notice: Indirect modification of overloaded element of Test2 has no effect in F:\huba.php on line 17 Test2 Object ( [huba] => Array ( [0] => one [1] => two ) ) ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/bug.php?id=51622&edit=1
