<?php while($row=mysqli_fetch_array($result)) { ?>
<div id="item">
 <form method="post" action="cartReceiver.php">Quantity:
  <?php echo '<img height="200" width="200" src="data:image;base64,'.$row[2]. '">';?>
  </br>
  <?php echo $row[ "name"];?>
  </br>
  <?php echo $row[ "price"];?>
  </br>
  <?php echo $row[ "description"];?>
  </br>
  <input type="text" value="" name="quantity" />
  </br>
  <input type="submit" value="add to cart" name="cart" />
 </form>
</div>
<?php }//end of while ?>

<?php
if (isset($_POST[ "cart"])){
$addtoname=$_SESSION[ 'username'];
$addtoprice=$row[ 'price'];
$addtodiscount=$row[ 'discount'];
$addtoid=$row[ 'id'];
$addtoimage=$row[ 'image'];
$addtoquantity=$_POST[ 'quantity'];
$hostname="localhost" ;
$username="root";
$password="" ;
$database="myproject" ; $con=mysqli_connect($hostname,$username,$password,$database) or die(mysqli_error());
$select=mysqli_select_db($con, "myproject")or die( "cannnot select db"); mysqli_query($con,"INSERT INTO cart(username,quantity,price,image,id,discount) VALUES('$addtoname','$addtoquantity','$addtoprice','$addtoimage','$addtoid','$addtodiscount')");
echo "success";
}
else{
echo "fail";
}

<?php while($row=mysqli_fetch_array($result)) { ?>
<div id="item">
 <form method="post" action="cartReceiver.php">Quantity:
  <?php echo '<img height="200" width="200" src="data:image;base64,'.$row[2]. '">';?>
  </br>
  <input type="text" name="name" value=" <?php echo $row[ "name"];?>" readonly />
  </br>
  <input type="text" name="price" value="<?php echo $row[ "price"];?>" readonly />
  </br>
  <input type="text" name="description" value="<?php echo $row[ "description"];?>" readonly />
  </br>
  <input type="text" value="" name="quantity" />
  </br>
  <input type="submit" value="add to cart" name="cart" />
 </form>
</div>
<?php }//end of while ?>