#47221 [Ver->Bgs]: no result from array_diff()
ID: 47221
Updated by: sjoerd@php.net
Reported By: sgnutzmann at yahoo dot de
-Status: Verified
+Status: Bogus
Bug Type: Arrays related
Operating System: win32 only - Windows XP
PHP Version: 5.2.8
New Comment:
Duplicate of bug #47643.
Previous Comments:
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[2009-09-01 00:04:33] felipe@php.net
See bug #47643
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[2009-08-31 16:42:06] sjoerd@php.net
Could reproduce. This code shows the time taken to array_diff two
arrays for the builtin array_diff and for a PHP function fast_array_diff
I wrote.
<?php
$a = $b = array();
for ($i = 0; $i < 10000; $i++) {
$a[] = "s" . ($i * 102121 % 433061);
$b[] = "s" . ($i * 102121 % 433003);
}
$start = microtime(true);
$res1 = array_diff($a, $b);
echo "Built-in array_diff duration: ".(microtime(true) - $start)."\n";
include('http://www.gissen.nl/files/fast_array_diff.php');
$start = microtime(true);
$res2 = fast_array_diff($a, $b);
echo "Fast_array_diff duration: ".(microtime(true) - $start)."\n";
sort($res1);
sort($res2);
assert($res1 == $res2);
?>
Output:
Built-in array_diff duration: 11.8710849285
Fast_array_diff duration: 0.254959106445
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[2009-02-08 13:03:18] jani@php.net
Please don't send me more spam. (never saw that and any direct mails
to me will be deleted anyway)
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[2009-01-27 13:55:35] sgnutzmann at yahoo dot de
I just try the latest version 'php-5.2-win32-VC6-x86-latest.msi'
(2009-Jan-27 12:00:00). This version has the same problem as PHP 5.2.8
(no return in 5 minutes from array_diff(), infinite loop?). I sent my
test dataset 'TestData.txt' to jani@php.net.
------------------------------------------------------------------------
[2009-01-27 12:09:33] sgnutzmann at yahoo dot de
PHP 5.2.6 has the same problem as PHP 5.2.8
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Thread (10 messages)