Problem while looping associative array

Function getStockBySizeDetails

function getStockBySizeDetails($stockId)
{
$sizeDetails = "";

$querySize = "SELECT * FROM stock_by_size WHERE stock_id = $stockId";
$resultSize = mysql_query($querySize);

while($rowSize = mysql_fetch_array($resultSize))
{
$sizeDetails[$index]['stockSizeId'] = $rowSize['id'];
$sizeDetails[$index]['size'] = $rowSize['size'];
$sizeDetails[$index]['length'] = $rowSize['length'];
$sizeDetails[$index]['stockQty'] = $rowSize['stock_qty'];
$sizeDetails[$index]['leftForProduction'] = $rowSize['left_for_production'];
$index++;
}
return $sizeDetails;
}

Function getCareLabelStockByStyle

function getCareLabelStockByStyle($basicInfoId)
{
$index = 0;
$careLabelStockInfoByStyle = "";
$materialCatId = getMaterialCatIdByName('care label');

$query = " SELECT sm.id,sm.buyer_id,sm.material_id,sm.material_cat_id,sm.total_stock_qty,sm.total_qty_left_for_production,sm.location,clml.basic_info_id,clml.description,clml.color,clml.ref_no,clml.unit_id,clml.total_req_qty,clml.total_rcv_qty,clml.balance,clml.rate";
$query .= " FROM stock_material as sm, care_label_material_list as clml WHERE ";
$query .= "(sm.material_cat_id = $materialCatId AND sm.material_id = clml.id)";
$query .= " AND clml.basic_info_id = $basicInfoId";

$result = mysql_query($query);

while($row = mysql_fetch_array($result))
{
$careLabelStockInfoByStyle[$index]['stockId'] = $row['id'];
$careLabelStockInfoByStyle[$index]['buyerId'] = $row['buyer_id'];
$careLabelStockInfoByStyle[$index]['materialId'] = $row['material_id'];
$careLabelStockInfoByStyle[$index]['materialCatId'] = $row['material_cat_id'];
$careLabelStockInfoByStyle[$index]['totalStockQty'] = $row['total_stock_qty'];
$careLabelStockInfoByStyle[$index]['totalQtyLeftForProduction'] = $row['total_qty_left_for_production'];
$careLabelStockInfoByStyle[$index]['location'] = $row['location'];
$careLabelStockInfoByStyle[$index]['basicInfoId'] = $row['basic_info_id'];
$careLabelStockInfoByStyle[$index]['description'] = $row['description'];
$careLabelStockInfoByStyle[$index]['color'] = $row['color'];
$careLabelStockInfoByStyle[$index]['refNo'] = $row['ref_no'];
$careLabelStockInfoByStyle[$index]['unit'] = get_unitname($row['unit_id']);
$careLabelStockInfoByStyle[$index]['totalReqQty'] = $row['total_req_qty'];
$careLabelStockInfoByStyle[$index]['totalRcvQty'] = $row['total_rcv_qty'];
$careLabelStockInfoByStyle[$index]['balance'] = $row['balance'];
$careLabelStockInfoByStyle[$index]['rate'] = $row['rate'];
$careLabelStockInfoByStyle[$index]['sizeDetails'] = getStockBySizeDetails($row['id']); /* Function getStockBySizeDetails */
$index++;
}
return $careLabelStockInfoByStyle;
}

Function checkStockInfoToTransfer

function checkStockInfoToTransfer($stockInfo,$transferQty)
{
$errorId = 1;
$stockQuery = "";

for($i = 0; $i < count($stockInfo); $i++)
{
$id = $stockInfo[$i]['stockId'];
if(is_array($stockInfo[$i]['sizeDetails']))
{
$sizeDetails = $stockInfo[$i]['sizeDetails'];
for($j = 0; $j < count($sizeDetails); $j++)
{
$sizeId = $sizeDetails[$j]['stockSizeId']; *******
$stockQuery = "SELECT * FROM stock_by_size WHERE id = $sizeId";
$stockResult = mysql_query($stockQuery);
$row = mysql_fetch_array($stockResult);
$stockQty = $row['stock_qty'];
if($transferQty[$id][$sizeId] > $stockQty)
{
$errorId = 0;
return $errorId;
}
}
}
else
{
$stockQuery = "SELECT * FROM stock_material WHERE id = $id";

$stockResult = mysql_query($stockQuery);
$row = mysql_fetch_array($stockResult);
$stockQty = $row['total_stock_qty'];

if($transferQty[$id] > $stockQty)
{
$errorId = 0;
return $errorId;
}
}
}
return $errorId;
}

$careLabelStockInfoByStyle = getCareLabelStockByStyle($basicInfoId);
$errorId = checkStockInfoToTransfer($careLabelStockInfoByStyle,$_REQUEST['transferCareLabel']);

While looping in function checkStockInfoToTransfer, i cant get the value of of $sizeId(Look at the starred line) at first iteration but after the first iteration i get the remaining $sizeId value.

May be i made something wrong while looping which i cant fix....
I need help.

Thanx in advance

Anindya