From:             lig at maolek dot com
Operating system: Windows XP SP2
PHP version:      5.1.4
PHP Bug Type:     Arrays related
Bug description:  Wrong output for function array_diff_ukey

Description:
------------
unexpected output.  Accourding to docs array_diff_ukey "returns an array
containing all the values of array1  that have keys that are not present
in any of the other arguments".  A key that is present in both $array1 and
$array2 is showing up in the output.  It should be noted that the values of
the keys are different, but the example provided in the doc page has the
same situation and the key isn't in the output.

Reproduce code:
---------------
function key_compare_func($a, $b)
{
   if ($a === $b) {
       return 0;
   }
   return ($a > $b)? 1:-1;
}

$array1 = array("a" => "green", "b" => "brown", "c" => "blue", "red",
"");
$array2 = array("a" => "green", "yellow", "red", TRUE);
$array3 = array("red", "a"=>"brown", "");

$result[] = array_diff_ukey($array1, $array3, "key_compare_func");
$result[] = array_diff_ukey($array2, $array3, "key_compare_func");

print_r($result);

Expected result:
----------------
Array
(
    [0] => Array
        (
            [b] => brown
            [c] => blue
        )

    [1] => Array
        (
            [2] => 1
        )

)

Actual result:
--------------
Array
(
    [0] => Array
        (
            [a] => green
            [b] => brown
            [c] => blue
        )

    [1] => Array
        (
            [a] => green
            [2] => 1
        )

)

-- 
Edit bug report at http://bugs.php.net/?id=37573&edit=1
-- 
Try a CVS snapshot (PHP 4.4): 
http://bugs.php.net/fix.php?id=37573&r=trysnapshot44
Try a CVS snapshot (PHP 5.2): 
http://bugs.php.net/fix.php?id=37573&r=trysnapshot52
Try a CVS snapshot (PHP 6.0): 
http://bugs.php.net/fix.php?id=37573&r=trysnapshot60
Fixed in CVS:                 http://bugs.php.net/fix.php?id=37573&r=fixedcvs
Fixed in release:             
http://bugs.php.net/fix.php?id=37573&r=alreadyfixed
Need backtrace:               http://bugs.php.net/fix.php?id=37573&r=needtrace
Need Reproduce Script:        http://bugs.php.net/fix.php?id=37573&r=needscript
Try newer version:            http://bugs.php.net/fix.php?id=37573&r=oldversion
Not developer issue:          http://bugs.php.net/fix.php?id=37573&r=support
Expected behavior:            http://bugs.php.net/fix.php?id=37573&r=notwrong
Not enough info:              
http://bugs.php.net/fix.php?id=37573&r=notenoughinfo
Submitted twice:              
http://bugs.php.net/fix.php?id=37573&r=submittedtwice
register_globals:             http://bugs.php.net/fix.php?id=37573&r=globals
PHP 3 support discontinued:   http://bugs.php.net/fix.php?id=37573&r=php3
Daylight Savings:             http://bugs.php.net/fix.php?id=37573&r=dst
IIS Stability:                http://bugs.php.net/fix.php?id=37573&r=isapi
Install GNU Sed:              http://bugs.php.net/fix.php?id=37573&r=gnused
Floating point limitations:   http://bugs.php.net/fix.php?id=37573&r=float
No Zend Extensions:           http://bugs.php.net/fix.php?id=37573&r=nozend
MySQL Configuration Error:    http://bugs.php.net/fix.php?id=37573&r=mysqlcfg

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