Bug #62977 [Asn]: array_unique() misbehaves with array of DateTimes
Edit report at https://bugs.php.net/bug.php?id=62977&edit=1
ID: 62977
Updated by: cmb@php.net
Reported by: ladislav at marek dot su
Summary: array_unique() misbehaves with array of DateTimes
Status: Assigned
Type: Bug
Package: Date/time related
Operating System: Linux
PHP Version: 5.4Git-2012-08-30 (Git)
Assigned To: laruence
Block user comment: N
Private report: N
New Comment:
It seems to me that this has been fixed as of PHP 7.0.0, see
<https://3v4l.org/rf96r>.
Previous Comments:
------------------------------------------------------------------------
[2012-08-31 04:08:33] laruence@php.net
fixing this we should introduce a new sorting function for objects
which will make the nearest objects be neighbourings after sorting, leaving the
comparing to the unique phase.
but the problem is how to implement "the nearest" (equal > same ce > not equal)
------------------------------------------------------------------------
[2012-08-31 03:41:56] laruence@php.net
Cataphrac, that's why I didn't commit it, and the reason is because the comparable
calss are not neighbouring after sorting.
that's not much thing to do with the compare handler of specific handler.
thanks
------------------------------------------------------------------------
[2012-08-30 17:27:44] cataphract@php.net
laruuence: The patch is very strange. Why are making all the elements of the same class being
compared equal? Objects can be compared. Perhaps you should fix the DateTime's
compare_objects() object handler.
------------------------------------------------------------------------
[2012-08-30 15:52:05] laruence@php.net
The following patch has been added/updated:
Patch Name: bug62977.patch
Revision: 1346341925
URL: https://bugs.php.net/patch-display.php?bug=62977&patch=bug62977.patch&revision=1346341925
------------------------------------------------------------------------
[2012-08-30 13:24:49] ladislav at marek dot su
Description:
------------
array_unique() returns duplicates for array which contains objects with DateTime
instances.
Test script:
---------------
<?php
class Foo
{
public $dt;
function __construct($dt)
{
$this->dt = $dt;
}
}
$foo = new Foo(new DateTime);
$std = new stdClass;
$arr = [$foo, $foo, $std, $std, $std];
var_dump(array_unique($arr, SORT_REGULAR));
Expected result:
----------------
array(4) {
[0]=>
object(Foo)#1 (1) {
["dt"]=>
object(DateTime)#2 (3) {
["date"]=>
string(19) "2012-08-30 15:18:01"
["timezone_type"]=>
int(3)
["timezone"]=>
string(13) "Europe/Prague"
}
}
[2]=>
object(stdClass)#3 (0) {
}
}
Actual result:
--------------
array(4) {
[0]=>
object(Foo)#1 (1) {
["dt"]=>
object(DateTime)#2 (3) {
["date"]=>
string(19) "2012-08-30 15:18:01"
["timezone_type"]=>
int(3)
["timezone"]=>
string(13) "Europe/Prague"
}
}
[1]=>
object(Foo)#1 (1) {
["dt"]=>
object(DateTime)#2 (3) {
["date"]=>
string(19) "2012-08-30 15:18:01"
["timezone_type"]=>
int(3)
["timezone"]=>
string(13) "Europe/Prague"
}
}
[2]=>
object(stdClass)#3 (0) {
}
[4]=>
object(stdClass)#3 (0) {
}
}
------------------------------------------------------------------------
--
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