Add Product Programatically in Magento

addProduct.php

<?php

//$product = Mage::getModel('catalog/product');
$product = new Mage_Catalog_Model_Product();
echo time();
// Build the product
$product->setAttributeSetId(9);// #4 is for default
$product->setTypeId('simple');

$product->setName('Some cool product name');
$product->setDescription('Full description here');
$product->setShortDescription('Short description here');
$product->setSku(time());
$product->setWeight(4.0000);
$product->setStatus(1);
$product->setVisibility(Mage_Catalog_Model_Product_Visibility::VISIBILITY_BOTH);//4
print_r(Mage_Catalog_Model_Product_Visibility::VISIBILITY_BOTH);

$product->setPrice(39.99);// # Set some price
$product->setTaxClassId(0);// # default tax class

$product->setStockData(array(
'is_in_stock' => 1,
'qty' => 99999
));

$product->setCategoryIds(array(27));// # some cat id's,

$product->setWebsiteIDs(array(1));// # Website id, 1 is default

//Default Magento attribute

$product->setCreatedAt(strtotime('now'));


//print_r($product);
try {
    $product->save();
    echo "Product Created";
}
catch (Exception $ex) {
    //Handle the error
    echo "Product Creation Failed";
}