Description:
------------
uasort overwrites the last element in a large associative array with incrementing numbers

Reproduce code:
---------------
$detaildata = array();
for($i = 0; $i < 6; $i++) {
	$lid = rand(1,200);
	$numpeople = rand(0,12);
	
	for($p = 0; $p < $numpeople; $p++) {
		$pid = rand(1,200);
		$detaildata[$lid][$pid] = array("string data","string data",$pid);
	}
}
$detaildata[9][44] = array("string data","string data",44);
//
foreach($detaildata as &$row) {
	uasort($row,CalSortCallback);
}
//
echo is_array($detaildata[9])?'yes':'no';
for($row = 0; $row < 5; $row++) {
	echo is_array($detaildata[9])?'yes':$detaildata[9];
}
//
function CalSortCallback($a,$b) {
	return strcmp($a[1],$b[1]);
}

Expected result:
----------------
it should print 6 yeses

yesyesyesyesyesyes

Actual result:
--------------
it prints yes01234