Magento: add configurable products to cart programmatically - magento

Question

How to add the child product to cart programmatically?
I've a child product SKU, I want to
Fetch the supper attributes like size and color id and values from the products,
Then fetch the parent product id,
Pass the super attributes on param with quantity, to add to function cart.
//$cart->addProduct($product1, $options);
Here, how to pass the supper attributes on the $option variable? Please help me!!!!

Answer 1

Try this. I think it may need some improvements but it works good in simple cases.
$_product = $this->getProduct();
$parentIds = Mage::getResourceSingleton('catalog/product_type_configurable')->getParentIdsByChild($_product->getId());
// check if something is returned
if (!empty(array_filter($parentIds))) {
$pid = $parentIds[0];
// Collect options applicable to the configurable product
$configurableProduct = Mage::getModel('catalog/product')->load($pid);
$productAttributeOptions = $configurableProduct->getTypeInstance(true)->getConfigurableAttributesAsArray($configurableProduct);
$options = array();
foreach ($productAttributeOptions as $productAttribute) {
$allValues = array_column($productAttribute['values'], 'value_index');
$currentProductValue = $_product->getData($productAttribute['attribute_code']);
if (in_array($currentProductValue, $allValues)) {
$options[$productAttribute['attribute_id']] = $currentProductValue;
}
}
// Get cart instance
$cart = Mage::getSingleton('checkout/cart');
$cart->init();
// Add a product with custom options
$params = array(
'product' => $configurableProduct->getId(),
'qty' => 1,
'super_attribute' => $options
);
$request = new Varien_Object();
$request->setData($params);
$cart->addProduct($configurableProduct, $request);
$session = Mage::getSingleton('customer/session');
$session->setCartWasUpdated(true);
$cart->save();
}

Answer 2

U can try.
$cart = Mage::getModel('checkout/cart');
$cart->init();
$productCollection = Mage::getModel('catalog/product')->load($productId);
$cart->addProduct($productCollection ,
array( 'product_id' => $productId,
'qty' => 1,
'options' => array( $optionId => $optionValue));
$cart->save();