Use the price of an existing variation when importing variations without price

use-existing-variations-price-for-variations-without-price.md

Use the price of an existing variation when importing variations without price

Instructions:

• This function uses the 'wp_all_import_before_variable_product_import' action (see https://www.wpallimport.com/documentation/action-reference/#wp_all_import_before_variable_product_import) to import/update variations that have no price, using the price of other existing variations within the same parent product.
• Just paste the code in the Function Editor (see https://d.pr/i/AWFICD)

function my_before_variable_product_import($product_id) {
    global $wpdb;

    $product = wc_get_product($product_id);
    if ($product && $product->is_type('variable')) {
        $children = $product->get_children();

        // Query to get the first variation with a price
        $price_query = "SELECT meta_value FROM {$wpdb->postmeta} WHERE post_id IN (" . implode(',', $children) . ") AND meta_key = '_price' AND meta_value > '' ORDER BY meta_id ASC LIMIT 1";
        $price = $wpdb->get_var($price_query);

        // Check if a price is found
        if (!empty($price)) {
            // Loop through each child and set the price
            foreach ($children as $child_id) {
                update_post_meta($child_id, '_price', $price);
                update_post_meta($child_id, '_regular_price', $price);
                
                // Update the product object and save it
                $child_product = wc_get_product($child_id);
                if ($child_product) {
                    $child_product->set_price($price);
                    $child_product->set_regular_price($price);
                    $child_product->save();
                }
            }
        }
    }
}

add_action('wp_all_import_before_variable_product_import', 'my_before_variable_product_import', 10, 1);