Req #49967 [Com]: Custom iteration cannot return keys other than ints or strings
Edit report at https://bugs.php.net/bug.php?id=49967&edit=1
ID: 49967
Comment by: nikic@php.net
Reported by: an0nym at narod dot ru
Summary: Custom iteration cannot return keys other than ints
or strings
Status: Closed
Type: Feature/Change Request
Package: Scripting Engine problem
Operating System: *
PHP Version: 5.3.0
Assigned To: colder
Block user comment: N
Private report: N
New Comment:
@haircut: Only the underlying feature (returning non-str/int keys from iterators) has been
implemented, the SplObjectStorage behavior had to be kept for BC reasons.
Previous Comments:
------------------------------------------------------------------------
[2014-01-06 23:29:52] haircut at gmail dot com
This still repros as originally submitted for me with PHP 5.5.3 (on my Ubuntu 13.10 64-bit desktop).
------------------------------------------------------------------------
[2013-09-21 23:17:55] levim@php.net
As of PHP 5.5, this is now fixed.
------------------------------------------------------------------------
[2009-11-11 12:13:28] colder@php.net
This is indeed a limitation of the iteration process itself, nothing specific to splobjectstorage.
------------------------------------------------------------------------
[2009-10-23 10:27:31] an0nym at narod dot ru
Ah, it seems that foreach can't handle anything non-scalar as a key. What a pity.
I think this should be changed in the future, because it limits the use of Iterators. For instance,
I can't use something like:
<?php
class MapObjectData extends SplObjectStorage
{
public function key ()
{
return parent::current ();
}
public function current ()
{
return parent::getInfo ();
}
}
$spl = new MapObjectData ();
$spl[new StdClass ()] = 'a';
$spl[new StdClass ()] = 'b';
foreach ($spl as $object => $data)
{
var_dump ($object, $data);
}
?>
------------------------------------------------------------------------
[2009-10-23 10:08:10] an0nym at narod dot ru
Description:
------------
Iteration over SplObjectStorage returns unexpected results: internal index => associated object
instead of object => associated data.
Reproduce code:
---------------
<?php
$spl = new SplObjectStorage ();
$spl[new StdClass ()] = 'a';
$spl[new StdClass ()] = 'b';
foreach ($spl as $object => $data)
{
var_dump ($object, $data);
}
?>
Expected result:
----------------
object(stdClass)#2 (0) {
}
string(1) "a"
object(stdClass)#3 (0) {
}
string(1) "b"
Actual result:
--------------
int(0)
object(stdClass)#2 (0) {
}
int(1)
object(stdClass)#2 (0) {
}
------------------------------------------------------------------------
--
Edit this bug report at https://bugs.php.net/bug.php?id=49967&edit=1
Thread (7 messages)