Bug #71334 [Asn->Csd]: Cannot access array keys while uksort()

From: Date: Wed, 30 Mar 2016 20:50:57 +0000
Subject: Bug #71334 [Asn->Csd]: Cannot access array keys while uksort()
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-200248@lists.php.net to get a copy of this message 
Edit report at https://bugs.php.net/bug.php?id=71334&edit=1

 ID:                 71334
 Updated by:         nikic@php.net
 Reported by:        alex dot schneider at sevenval dot com
 Summary:            Cannot access array keys while uksort()
-Status:             Assigned
+Status:             Closed
 Type:               Bug
 Package:            Arrays related
 Operating System:   Linux Mint 17.3
 PHP Version:        7.0.2
 Assigned To:        laruence
 Block user comment: N
 Private report:     N

 New Comment:

Automatic comment on behalf of nikic
Revision: http://git.php.net/?p=php-src.git;a=commit;h=b1e854f7762b2e0648ddc240835cb446ee4d20a7
Log: Fix bug #71334


Previous Comments:
------------------------------------------------------------------------
[2016-03-30 20:38:20] nikic@php.net

Related To: Bug #71926

------------------------------------------------------------------------
[2016-02-22 12:55:25] nikic@php.net

New patch that resolves the ArrayObject issue: https://github.com/nikic/php-src/commit/73e6c257abc9ad5a5aef6b91a2238e941b2045d5

------------------------------------------------------------------------
[2016-01-13 16:15:11] jsgoupil at gmail dot com

I have the same problem, I am able to access the values, but the sorting is not correct.

<?php
function cmp($a, $b)
{
    $x = $GLOBALS['x'];
    
    $v1 = $x[$a];
    $v2 = $x[$b];
    if ($v1 < $v2) {
        return -1;
    } elseif ($v1 > $v2) {
        return 1;
    } else {
        // Would then sort by key, irrelevant here.
    }
}

$x = array(1 => 1, 2 => 3, 3 => 2);
uksort($x, 'cmp');
var_dump($x);

// PHP5
array(3) { [1]=> int(1) [3]=> int(2) [2]=> int(3) }

// PHP7
array(3) { [3]=> int(2) [2]=> int(3) [1]=> int(1) }


Let me know if you want me to open another bug instead.

------------------------------------------------------------------------
[2016-01-13 06:36:55] laruence@php.net

hmm, we could also adjust arHash after swap, but it must not be a simple patch..

thanks

------------------------------------------------------------------------
[2016-01-12 16:36:08] nikic@php.net

It looks like ArrayObject relies on sorting functions not to duplicate the array for the rc=1 case,
so this will need some more work :(

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


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