<?php 
include("db_config.php"); 
if($_SERVER['REQUEST_METHOD']=='POST'){
     $user_id = $_POST['user_id'];
     $cart_id = $_POST['cart_id'];
     $qty = $_POST['qty'];
	$sql1 ="UPDATE  addto_cart  SET quantity='$qty'  WHERE id='$cart_id'"; 
     $res=mysqli_query($conn,$sql1) or die(mysqli_error());
     if($res){
	  $response['status']=1;
	}
	else {
		$response['status']=0;
	}
	echo json_encode($response);
	mysqli_close($conn);
}