delete not working properly in while loop - php

Question

here i am trying to delete from detail table here is one problem with my code if detail table have three records than only delete one record from detail table.and also it does not effect other two records in stock table..
Only one first record this code work properly after that it does not work in for delete query from detail table and not effected in stock table...
<?php
include("include/config.inc.php");
$purchaseMasterId = isset($_REQUEST['purchaseMasterId']) ? $_REQUEST['purchaseMasterId'] : 0;
if($purchaseMasterId > 0) {
$k = 0;
$selectMaster = "SELECT purchasedetail.purchaseMasterId, colorId,
totalkg, purchaseDetailId, partyId
FROM purchasedetail
JOIN purchasemaster ON
purchaseMaster.purchaseMasterId = purchasedetail.purchaseMasterId
WHERE purchasedetail.purchaseMasterId = ".$_REQUEST['purchaseMasterId'];
$selectMasterRes = mysql_query($selectMaster);
while($purRow = mysql_fetch_array($selectMasterRes)) {
$purchaseDetailId = $purRow['purchaseDetailId'];
$purchaseMasterId = $purRow['purchaseMasterId'];
$colorId = $purRow['colorId'];
$totalkg = $purRow['totalkg'];
$partyId = $purRow['partyId'];
$select = "SELECT qty
FROM stock
WHERE partyId = ".$partyId."
AND colorId = ".$colorId;
$selectRes = mysql_query($select);
if($stockRow = mysql_fetch_array($selectRes)) {
$current = $stockRow['qty'];
}
$updateStock = "UPDATE stock
SET qty = ".$current." - ".$totalkg."
WHERE partyId = ".$partyId."
AND colorId = ".$colorId;
$updateStockRes = mysql_query($updateStock) or die(mysql_error());
if($updateStockRes) {
$deleteDt = "DELETE FROM purchasedetail
WHERE purchaseDetailId = ".$purchaseDetailId;
$deleteRes = mysql_query($deleteDt);
if($deleteRes){
$deleteMst = "DELETE FROM purchasemaster
WHERE purchaseMasterId = ".$_REQUEST['purchaseMasterId'];
$deleteMstRes = mysql_query($deleteMst) or die(mysql_error());
if(!$deleteMstRes) {
echo "Purchase Master Delete Fail";
} else {
header("Location:purdetail.php");
exit();
}
}
}
}
}
?>

Answer 1

Here is my updated code with perfect code working
<?php
include("include/config.inc.php");
$purchaseMasterId = isset($_REQUEST['purchaseMasterId']) ? $_REQUEST['purchaseMasterId'] : 0;
if($purchaseMasterId > 0)
{
$k = 0;
$selectMaster = "SELECT purchasedetail.purchaseMasterId,colorId,totalkg,purchaseDetailId,partyId
FROM purchasedetail
JOIN purchasemaster ON purchasemaster.purchaseMasterId = purchasedetail.purchaseMasterId
WHERE purchasedetail.purchaseMasterId = ".$_REQUEST['purchaseMasterId'];
$selectMasterRes = mysql_query($selectMaster) or die(mysql_error());
while($purRow = mysql_fetch_array($selectMasterRes))
{
$purchaseDetailId = $purRow['purchaseDetailId'];
$purchaseMasterId = $purRow['purchaseMasterId'];
$colorId = $purRow['colorId'];
$totalkg = $purRow['totalkg'];
$partyId = $purRow['partyId'];
$select = "SELECT qty
FROM stock
WHERE partyId = ".$partyId."
AND colorId = ".$colorId;
$selectRes = mysql_query($select);
if($stockRow = mysql_fetch_array($selectRes))
{
$current = $stockRow['qty'];
}
$updateStock = "UPDATE stock
SET qty = ".$current." - ".$totalkg."
WHERE partyId = ".$partyId."
AND colorId = ".$colorId;
$updateStockRes = mysql_query($updateStock) or die(mysql_error());
if($updateStockRes)
{
$deleteDt = "DELETE FROM purchasedetail
WHERE purchaseDetailId = ".$purchaseDetailId;
$deleteRes = mysql_query($deleteDt);
if($deleteRes)
{
$selectid = "SELECT purchaseDetailId
FROM purchasedetail
WHERE purchaseMasterId = ".$purchaseMasterId;
$selectidRes = mysql_query($selectid);
if(mysql_affected_rows() == 0)
{
$mst = "DELETE FROM purchasemaster
WHERE purchaseMasterId = ".$purchaseMasterId;
$mstRes = mysql_query($mst) or die(mysql_error());;
if($mstRes)
{
header("Location:purdetail.php");
exit();
}
else
{
}
}
}
}
}
}
?>