Bug #10658 Updated: array_diff does not work with classes
| From: | jeroen@php.net | Date: | Fri, 14 Sep 2001 23:32:39 +0000 |
| Subject: | Bug #10658 Updated: array_diff does not work with classes | ||
| References: | 1 | Groups: | php.dev |
| Request: | Send a blank email to php-dev+get-65976@lists.php.net to get a copy of this message | ||
ID: 10658
Updated by: jeroen
Reported By: mihai.negrea@spidernet.co.ro
Old Status: Open
Status: Suspended
Bug Type: Arrays related
Operating System: Linux
PHP Version: 4.0.5
New Comment:
The problem is that array_diff compares the string-represantation of the arguments.
And in the case of objects, it is always "Object", and thus considered equal.
This is currently expected behaviour, though it'd be be better if it weren't...
string-comparasation by array_diff & co is not satisfactionary in case of objects. (nor arrays)
Suspended.
Previous Comments:
------------------------------------------------------------------------
[2001-05-04 03:36:46] mihai.negrea@spidernet.co.ro
Consider the following script:
<?
class test
{
var $x;
var $y;
function test ()
{
$this->x = 0;
$this->y = 0;
}
function set ($x, $y)
{
$this->x = $x;
$this->y = $y;
}
}
$mumu = array();
$gaga = array();
for($i=0;$i<3;$i++)
{
$test = new test ();
$test->set($i, $i);
$mumu["xx".$i] = $test;
}
for($i=0;$i<5;$i++)
{
$test = new test ();
$test->set($i, $i);
$gaga["xx".$i] = $test;
}
$fff = array_diff($mumu, $gaga);
$ggg = array_diff($gaga, $mumu);
echo "<pre>";
print_r($fff);
echo "</pre>";
echo "<pre>";
print_r($ggg);
echo "</pre>";
?>
the following is the output from a server with php
4.0.4pl1:
Array
(
)
Array
(
[xx3] => test Object
(
[x] => 3
[y] => 3
)
[xx4] => test Object
(
[x] => 4
[y] => 4
)
)
and the following is the ouput with php 4.0.5:
Array
(
)
Array
(
)
the php.ini is the same on both servers.
------------------------------------------------------------------------
Edit this bug report at http://bugs.php.net/?id=10658&edit=1