Edit report at http://bugs.php.net/bug.php?id=47643&edit=1
ID: 47643
Comment by: sylvain at jamendo dot com
Reported by: viper7 at viper-7 dot com
Summary: array_diff() takes over 3000 times longer than php
5.2.4
Status: Assigned
Type: Bug
Package: Performance problem
Operating System: *
PHP Version: 5.*, 6CVS (2009-04-13)
Assigned To: felipe
New Comment:
I would also appreciate a patch, this issue made our servers crash after
a php 5.3
upgrade :-/
thanks!
Previous Comments:
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[2010-02-17 20:53:53] maarten at talkin dot nl
Why dont you only reset ptr if (behavior & DIFF_ASSOC) ?
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[2010-01-17 12:09:15] emiel dot bruijntjes at copernica dot com
This bug is now open for 10 months. Are you still working on this?
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[2009-07-09 20:38:20] j...@php.net
As Dmitry's noted, this is side-effect your fix caused.
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[2009-07-01 15:32:01] dmi...@php.net
The problems occurs because of "bad" patch for bug #42838.
The diff algorithm sorts arrays using qsort and then assumes that they
are sorted correctly. But in case of user compaison function it can't be
guaranteed. Thus in ext/standard/tests/array/bug42838.phpt
key_compare_func() can't sort array correctly because expressions (0 <
'a') and (0 > 'a') both false ('a' is interpreted as a number 0).
It should be fixed in some way
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[2009-06-30 15:22:24] der...@php.net
Dmitry, could you have a look? I have no idea why this occurs.
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