modify product

[karthikanov24]

hi

In the following function, to modify a product in a shopping cart,

function modifyProduct()
{
$productId   = (int)$_GET['productId'];	
    $catId       = $_POST['cboCategory'];
    $name        = $_POST['txtName'];
$description = $_POST['mtxDescription'];
$price       = str_replace(',', '', $_POST['txtPrice']);
$qty         = $_POST['txtQty'];

$images = uploadProductImage('fleImage', SRV_ROOT . 'images/product/');

$mainImage = $images['image'];
$thumbnail = $images['thumbnail'];
//echo $thumbnail;

// if uploading a new image
// remove old image
if ($mainImage != '') {
	_deleteImage($productId);

	$mainImage = "'$mainImage'";
	$thumbnail = "'$thumbnail'";

} else {
	// if we're not updating the image
	// make sure the old path remain the same
	// in the database
	$mainImage = 'pd_image';
	$thumbnail = 'pd_thumbnail';
}

$sql   = "UPDATE tbl_product 
          SET cat_id = $catId, pd_name = '$name', pd_description = '$description', pd_price = $price, 
		      pd_qty = $qty, pd_image = $mainImage, pd_thumbnail = $thumbnail
		  WHERE pd_id = $productId";  

$result = dbQuery($sql);

header('Location: index.php');			  
}

 

At the following lines of code,

 

$mainImage = "'$mainImage'";

$thumbnail = "'$thumbnail'";

 

why $mainimage is inside double quotes  ?