Wordpress create product woocommerce

product_create.php

<?php

/**
 * Create product
 */
function csdev_new_simple_product()
{

    $product = new WC_Product_Simple();
    $product->set_name('test 2');
    $product->set_sku('test2');
    $product->set_slug('test2-product');
    $product->set_regular_price(0.00);
    $product->set_short_description('<p>Test Product</p>');
    $product->set_description('Long Test Product...');
    $product->set_image_id(90);
    // let's suppose that our 'Accessories' category has ID = 19 
    $product->set_category_ids(array(19));
    $product->save();
}