Display total stock and total variations in WooCommerce products management page

functions.php

<?php
add_filter( 'manage_edit-product_columns', 'woocommerce_product_custom_columns' );
function woocommerce_product_custom_columns( $columns ) {

    $new_columns = array();

    foreach ( $columns as $key => $value ) {
        $new_columns[ $key ] = $value;

        // Add total variations column after stock status column
        if ( $key === 'is_in_stock' ) {
            $new_columns['total_variations'] = __( 'Variations', 'woocommerce' );
        }
    }

    return $new_columns;

}

add_action( 'manage_product_posts_custom_column', 'woocommerce_product_custom_columns_value', 30, 2 ); // lower priority, so that we can display stock quantity after the stock status
function woocommerce_product_custom_columns_value( $column, $product_id ) {

    $product = wc_get_product( $product_id );

    switch ( $column ) {
        case 'is_in_stock':
            if ( $product->is_type( 'variable' ) ) {
                $available_variations = $product->get_available_variations();

                $stock = 0;

                // Count total stock quantity for every variation
                foreach ( $available_variations as $variation ) {
                    $product_variation = new WC_Product_Variation( $variation['variation_id'] );
                    $stock += $product_variation->get_stock_quantity();
                }

                echo sprintf( ' (%d)', $stock );

            }
            break;

        case 'total_variations':
            if ( $product->is_type( 'variable' ) ) {
                $total_variations = count( $product->get_children() );
                printf( _n( '%d Variation', '%d Variations', $total_variations, 'woocommerce' ), $total_variations );
            } else {
                echo '–';
            }
            break;
    }

}

Thanks very much for this, a very nice little adddition. Made a few clients very happy ;)

You're welcome. Glad to hear that.

Hello. Where to put this code?

Hello. Where to put this code?

You place it in functions.php within your theme.

Thank you!