Can not reproduce with PHP 4.1.0RC1.

--Jani

i have the same problem :
using 6 array : $years, $months, $ids, $titles, $urls, $dates
and doing :
$ar = array($years, $months, $ids, $titles, $urls, $dts);
array_multisort($ar[0], SORT_DESC, SORT_NUMERIC, $ar[1], SORT_NUMERIC, SORT_DESC, $ar[2], $ar[3], $ar[4], $ar[5]);
which results "Warning: Array sizes are inconsistent in ...". even with SORT_REGULAR it gives the same error. but it sorts them which is pretty funny :)
i suppress it with @ and it sorts them without showing warnings - the only way it works
p.s. it shwo that warning from time to time - not always.

I've also encountered this problem.

Version:
PHP Version 4.2.3

Environment:
FreeBSD 4.7-PRERELEASE #1: Mon Sep 2 12:14:18 IST 2002  

Configure Command:
 './configure' '--with-apxs=/usr/local/sbin/apxs' '--with-config-file-path=/usr/local/etc' '--enable-versioning' '--with-regex=system' '--without-gd' '--without-mysql' '--with-mhash=/usr/local' '--with-pgsql=/usr/local' '--with-ldap=/usr/local' '--enable-xslt' '--with-xslt-sablot=/usr/local' '--enable-trans-sid' '--with-expat-dir=/usr/local' '--with-iconv=/usr/local' '--prefix=/usr/local' 'i386-portbld-freebsd4.7'

(built from FreeBSD ports collection)

Testcase:
// create an array
$array = array();
for ($i = 1; $i < 25; $i++) {
  array_push($array,"Dublin $i");
}
// randomise it
$rand_array = array();
srand ((float) microtime() * 10000000);
foreach (array_rand($array,sizeof($array)) as $index) {
  array_push($rand_array,$array[$index]);
}

// get it sorted by string
$array_sorted_str = $rand_array;
sort($array_sorted_str,SORT_STRING);
// get it sorted numerically
$array_sorted_num = $rand_array;
sort($array_sorted_num,SORT_NUMERIC);

echo "Original array";
echo "<ul>";
foreach ($array as $v) {
  echo "<li>$v</li>";
}
echo "</ul>";

echo "Randomised array";
echo "<ul>";
foreach ($rand_array as $v) {
  echo "<li>$v</li>";
}
echo "</ul>";

echo "array sorted by string";
echo "<ul>";
foreach ($array_sorted_str as $v) {
  echo "<li>$v</li>";
}
echo "</ul>";

echo "array sorted numerically";
echo "<ul>";
foreach ($array_sorted_num as $v) {
  echo "<li>$v</li>";
}
echo "</ul>";

I would expect the numeric sort to give me Dublin 1, Dublin 2...Dublin 11,Dublin 12...Dublin 20 etc. 

While it does change the array, it appears to do so in a random fashion (at least I cannot understand it).

Tadgh