Req #61887 [NEW]: Behaviour of function given to usort

From: Date: Tue, 01 May 2012 07:42:22 +0000
Subject: Req #61887 [NEW]: Behaviour of function given to usort
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-170056@lists.php.net to get a copy of this message 
From:             
Operating system: 
PHP version:      Irrelevant
Package:          *General Issues
Bug Type:         Feature/Change Request
Bug description:Behaviour of function given to usort

Description:
------------
If you try to sort and array with the custom function using usort, you have
to return -1, 0 or 1. It would be nice if user can return any integer and
usort function would decide based on the sgn() value

// after few years programming in Python/Java I had problems why my code
doesn't work, because I just returned value $a-$b not sgn($a-$b)

Expected result:
----------------
I'd expect usort function to work with any integer, not just -1, 0, 1

Actual result:
--------------
Usort function shuffle the array, it doesn't give me any warning

-- 
Edit bug report at https://bugs.php.net/bug.php?id=61887&edit=1
-- 
Try a snapshot (PHP 5.4):            https://bugs.php.net/fix.php?id=61887&r=trysnapshot54
Try a snapshot (PHP 5.3):            https://bugs.php.net/fix.php?id=61887&r=trysnapshot53
Try a snapshot (trunk):              https://bugs.php.net/fix.php?id=61887&r=trysnapshottrunk
Fixed in SVN:                        https://bugs.php.net/fix.php?id=61887&r=fixed
Fixed in SVN and need be documented: https://bugs.php.net/fix.php?id=61887&r=needdocs
Fixed in release:                    https://bugs.php.net/fix.php?id=61887&r=alreadyfixed
Need backtrace:                      https://bugs.php.net/fix.php?id=61887&r=needtrace
Need Reproduce Script:               https://bugs.php.net/fix.php?id=61887&r=needscript
Try newer version:                   https://bugs.php.net/fix.php?id=61887&r=oldversion
Not developer issue:                 https://bugs.php.net/fix.php?id=61887&r=support
Expected behavior:                   https://bugs.php.net/fix.php?id=61887&r=notwrong
Not enough info:                     https://bugs.php.net/fix.php?id=61887&r=notenoughinfo
Submitted twice:                     https://bugs.php.net/fix.php?id=61887&r=submittedtwice
register_globals:                    https://bugs.php.net/fix.php?id=61887&r=globals
PHP 4 support discontinued:          https://bugs.php.net/fix.php?id=61887&r=php4
Daylight Savings:                    https://bugs.php.net/fix.php?id=61887&r=dst
IIS Stability:                       https://bugs.php.net/fix.php?id=61887&r=isapi
Install GNU Sed:                     https://bugs.php.net/fix.php?id=61887&r=gnused
Floating point limitations:          https://bugs.php.net/fix.php?id=61887&r=float
No Zend Extensions:                  https://bugs.php.net/fix.php?id=61887&r=nozend
MySQL Configuration Error:           https://bugs.php.net/fix.php?id=61887&r=mysqlcfg

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