Remove associated products in magento

In magento it is very difficult to remove numbers of simple products which are associated with one configurable manually. So here i show programmatically how to remove and save your valuable time. If you are familiar with magento programming then it good to go else don’t do it.

associated simple & configurable products

require_once 'app/Mage.php';

$file_handle = fopen("associated-products.csv", "r");
while (!feof($file_handle) ) {
	$line_of_text = fgetcsv($file_handle, 1024);
	$simpleSku = $line_of_text[0];
	$configurableSku = $line_of_text[1];
	echo $simpleSku." = ".$configurableSku."<br/>";

        $simpleProduct = Mage::getModel('catalog/product')->loadByAttribute('sku',$simpleSku);
	$configurableProduct = Mage::getModel('catalog/product')->loadByAttribute('sku',$configurableSku);
	$simpleId = $simpleProduct->getId();
	$configurableProductId = $configurableProduct->getId();
	echo $simpleId." = ".$configurableProductId."<br/>";
	$ids = $configurableProduct->getTypeInstance()->getUsedProductIds();
	$resource = Mage::getSingleton('core/resource');
	$read = Mage::getSingleton('core/resource')->getConnection('core_read');
	$write = $resource->getConnection('core_write');

        $write->query("delete from catalog_product_super_link where parent_id=".$configurableProductId." AND product_id='".$simpleId."'"); 

1. Create an excel file and save as “associated-products.csv” or any you wish.
2. IMP: Not necessary to provide column name in sheet as shown, you can place direct skus & configurable sku. Pl note first column is simple skus & on second column it is configurable sku from which you want to remove.
3. Upload csv file to root path of magento on server.
4. Create a file “config-associated.php” and add code as shown above and upload to root of magento.
5. Run the url

Make sure all the listed simple skus will be removed from the config product. here as e.g.: 1234 is config product and on first column all are simple products will be removed.