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update_cart.php
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<?php
session_start();
include('admin/modules/config.php');
//
if(isset($_GET['thoat'])&&$_GET['thoat']==1){
unset($_SESSION['dangnhap']);
header('location:shoppage.php?quanly=dathang');
}
//tru sp
if(isset($_GET['tru'])){
$id=$_GET['tru'];
foreach($_SESSION['product'] as $cart_item){
if($id!=$cart_item['id']){
$product[]=array('tensp'=>$cart_item['tensp'],'id'=>$cart_item['id'],'soluong'=>$cart_item['soluong'],'gia'=>$cart_item['gia']);
$_SESSION['product']=$product;
}else{
$giam=$cart_item['soluong']-1;
if($cart_item['soluong']>1){
$product[]=array('tensp'=>$cart_item['tensp'],'id'=>$cart_item['id'],'soluong'=>$giam,'gia'=>$cart_item['gia']);
}else{
$giam=1;
$product[]=array('tensp'=>$cart_item['tensp'],'id'=>$cart_item['id'],'soluong'=>$giam,'gia'=>$cart_item['gia']);
}
$_SESSION['product']=$product;
}
header('location:shoppage.php?quanly=dathang');
}
}
//cong them sp
if(isset($_GET['cong'])){
$id=$_GET['cong'];
foreach($_SESSION['product'] as $cart_item){
if($id!=$cart_item['id']){
$product[]=array('tensp'=>$cart_item['tensp'],'id'=>$cart_item['id'],'soluong'=>$cart_item['soluong'],'gia'=>$cart_item['gia']);
$_SESSION['product']=$product;
}else{
$tang=$cart_item['soluong']+1;
if($cart_item['soluong']<9){
$product[]=array('tensp'=>$cart_item['tensp'],'id'=>$cart_item['id'],'soluong'=>$tang,'gia'=>$cart_item['gia']);
}else{
$product[]=array('tensp'=>$cart_item['tensp'],'id'=>$cart_item['id'],'soluong'=>$cart_item['soluong'],'gia'=>$cart_item['gia']);
}
$_SESSION['product']=$product;
}
header('location:shoppage.php?quanly=dathang');
}
}
//xoa san pham
if(isset($_SESSION['product'])&&isset($_GET['xoa'])){
$id=$_GET['xoa'];
foreach($_SESSION['product'] as $cart_item){
if($cart_item['id']!= $id){
$product[]=array('tensp'=>$cart_item['tensp'],'id'=>$cart_item['id'],'soluong'=>$cart_item['soluong'],'gia'=>$cart_item['gia']);
}
$_SESSION['product']=$product;
header('location:shoppage.php?quanly=dathang');
}
}
//xoa toan bo giohang
if(isset($_GET['xoatoanbo'])&&$_GET['xoatoanbo']==1){
session_destroy();
header('location:shoppage.php?quanly=dathang');
}
//them giohang
if(isset($_POST['add_to_cart'])){
$id=$_GET['id'];
$soluong=$_POST['soluong'];
$sql="select * from product_admin where productid='$id' limit 1";
$row=mysqli_query($conn, $sql);
$dong=mysqli_fetch_array($row);
if($dong){
$new_product=array(array('tensp'=>$dong['productname'],'id'=>$id,'soluong'=>$soluong,'gia'=>$dong['price']));
if(isset($_SESSION['product'])){
$found=false;
foreach($_SESSION['product'] as $cart_item){
if($cart_item['id'] == $id){
$product[]=array('tensp'=>$cart_item['tensp'],'id'=>$cart_item['id'],'soluong'=>$soluong,'gia'=>$cart_item['gia']);
$found=true;
}else{
$product[]=array('tensp'=>$cart_item['tensp'],'id'=>$cart_item['id'],'soluong'=>$cart_item['soluong'],'gia'=>$cart_item['gia']);
}
}if($found==false){
$_SESSION['product']=array_merge($product,$new_product);
}else{
$_SESSION['product']=$product;
}
}else{
$_SESSION['product']=$new_product;
}
}
header('location:shoppage.php?quanly=dathang');
}
?>