我在woocommerce的单个产品页面中创建了自定义字段，用户可以在其中分别输入值高度和宽度，因为输入值也显示在购物车和结帐页面中。示例：如果用户输入height=\'15\'和width=\'20\'，则其显示为购物车页面，如height=15 width=20

总价=（高度/3*宽度/30+3）*1.48

我无法完成此部分，或者我不知道如何完成此部分

到目前为止我试过的代码

/*
 * Display input on single product page
 * @return html
 */
function kia_satish_option(){
    $value = isset( $_POST[\'_satish_option\'] ) ? sanitize_wp_checkbox( $_POST[\'_satish_option\'] ) : \'\';
    printf( \'<label>%s</label><input name="_satish_option" value="%s" type="number"/>\', __( \'Height\', \'kia-plugin-textdomain\' ), esc_attr( $value ) );
}
add_action( \'woocommerce_before_add_to_cart_button\', \'kia_satish_option\', 9 );

function kia_satisher_option(){
    $value = isset( $_POST[\'_satisher_option\'] ) ? sanitize_wp_checkbox( $_POST[\'_satisher_option\'] ) : \'\';
    printf( \'<label>%s</label><input name="_satisher_option" value="%s" type="number"/>\', __( \'width\', \'kia-plugin-textdomain\' ), esc_attr( $value ) );
}
add_action( \'woocommerce_before_add_to_cart_button\', \'kia_satisher_option\', 9 );


function kia_yard_option(){
    $value = isset( $_POST[\'_yard_option\'] ) ? sanitize_wp_checkbox( $_POST[\'_yard_option\'] ) : \'\';
    printf( \'<label>%s</label><input name="_yard_option" value="%s" type="number"/>\', __( \'yard\', \'kia-plugin-textdomain\' ), esc_attr( $value ) );
}
add_action( \'woocommerce_before_add_to_cart_button\', \'kia_yard_option\', 9 );



/*
 * Add custom data to the cart item
 * @param array $cart_item
 * @param int $product_id
 * @return array
 */
function kia_add_cart_item_data( $cart_item, $product_id ){

    if( isset( $_POST[\'_satish_option\'] ) ) {
        $cart_item[\'satish_option\'] = sanitize_text_field( $_POST[\'_satish_option\'] );
    }

    if( isset( $_POST[\'_satisher_option\'] ) ) {
        $cart_item[\'satisher_option\'] = sanitize_text_field( $_POST[\'_satisher_option\'] );
    }

    if( isset( $_POST[\'_yard_option\'] ) ) {
        $cart_item[\'yard_option\'] = sanitize_text_field( $_POST[\'_yard_option\'] );
    }

    return $cart_item;

}
add_filter( \'woocommerce_add_cart_item_data\', \'kia_add_cart_item_data\', 10, 2 );


/*
 * Load cart data from session
 * @param array $cart_item
 * @param array $other_data
 * @return array
 */
function kia_get_cart_item_from_session( $cart_item, $values ) {

    if ( isset( $values[\'satish_option\'] ) ){
        $cart_item[\'satish_option\'] = $values[\'satish_option\'];
    }

    if ( isset( $values[\'satisher_option\'] ) ){
        $cart_item[\'satisher_option\'] = $values[\'satisher_option\'];
    }

    if ( isset( $values[\'yard_option\'] ) ){
        $cart_item[\'yard_option\'] = $values[\'yard_option\'];
    }

    return $cart_item;

}
add_filter( \'woocommerce_get_cart_item_from_session\', \'kia_get_cart_item_from_session\', 20, 2 );





/*
 * Add meta to order item
 * @param int $item_id
 * @param array $values
 * @return void
 */
function kia_add_order_item_meta( $item_id, $values ) {

    if ( ! empty( $values[\'satish_option\'] ) ) {
        woocommerce_add_order_item_meta( $item_id, \'satish_option\', $values[\'satish_option\'] );           
    }

    if ( ! empty( $values[\'satisher_option\'] ) ) {
        woocommerce_add_order_item_meta( $item_id, \'satisher_option\', $values[\'satisher_option\'] );           
    }
}
add_action( \'woocommerce_add_order_item_meta\', \'kia_add_order_item_meta\', 10, 2 );




/*
 * Get item data to display in cart
 * @param array $other_data
 * @param array $cart_item
 * @return array
 */
function kia_get_item_data( $other_data, $cart_item ) {

    if ( isset( $cart_item[\'satish_option\'] ) ){

        $other_data[] = array(
            \'name\' => __( \'height\', \'kia-plugin-textdomain\' ),
            \'value\' => sanitize_text_field( $cart_item[\'satish_option\'] )
        );

    }

    if ( isset( $cart_item[\'satisher_option\'] ) ){

        $other_data[] = array(
            \'name\' => __( \'width\', \'kia-plugin-textdomain\' ),
            \'value\' => sanitize_text_field( $cart_item[\'satisher_option\'] )
        );

    }

    if ( isset( $cart_item[\'yard_option\'] ) ){

        $other_data[] = array(
            \'name\' => __( \'Yard\', \'kia-plugin-textdomain\' ),
            \'value\' => sanitize_text_field( $cart_item[\'yard_option\'] )
        );

    }

    return $other_data;

}
add_filter( \'woocommerce_get_item_data\', \'kia_get_item_data\', 10, 2 );


i tried to achieve formula section by code below

    function woo_add_custom_general_fields_save($post_id)
{
    $woocommerce_product_height = $_POST[\'_product_height\'];
    $woocommerce_product_width = $_POST[\'_product_width\'];
    $woocommerce_final_price = $_POST[\'_final_price\'];


// calculate and save _product_area_price, _regular_price, price as Height*Width
    if (!empty($woocommerce_product_height) && !empty($woocommerce_product_width)))
        $woocommerce_final_price = $woocommerce_product_height * $woocommerce_product_width ;