#10658 [Com]: array_diff does not work with classes

[advice-oral643 at hotmail dot com]

 ID:               10658
 Comment by:       advice-oral643 at hotmail dot com
 Reported By:      mihai dot negrea at spidernet dot co dot ro
 Status:           Bogus
 Bug Type:         Arrays related
 Operating System: Linux
 PHP Version:      4.0.5
 New Comment:

<a href=http://outstanding--armed.da.ru>advice oral</a>


Previous Comments:
------------------------------------------------------------------------

[2002-08-23 21:22:38] [EMAIL PROTECTED]

expected behaviour, not bug -> bogus.


------------------------------------------------------------------------

[2001-09-14 19:32:39] [EMAIL PROTECTED]

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.

------------------------------------------------------------------------

[2001-05-04 03:36:46] mihai dot negrea at spidernet dot co dot 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.



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Edit this bug report at http://bugs.php.net/?id=10658&edit=1