Php 未正确显示退货价格

我有非常简单的代码来显示扣除后的产品价格。请参阅下面的代码

add_action( 'woocommerce_get_price_html' , 'rp_get_price' );
function rp_get_price($price){
    $rp_percentage = 10;
    $regular_price = get_post_meta( get_the_ID(), '_price', true );
    $rp_discount = $regular_price * $rp_percentage / 100;
    $price = $regular_price - $rp_discount; 
    return $price;
}

add_filter( 'woocommerce_variable_sale_price_html', 'wc_wc20_variation_price_format', 10, 2 );
add_filter( 'woocommerce_variable_price_html', 'wc_wc20_variation_price_format', 10, 2 );
function wc_wc20_variation_price_format( $price, $product ) {
    $rp_percentage = 10;

    $min_price = $product->get_variation_price( 'min', true );
    $max_price = $product->get_variation_price( 'max', true );

    $rp_min_discount = $min_price*10/100;
    $rp_min_price = $min_price - $rp_min_discount;

    $rp_max_discount = $max_price*10/100;
    $rp_max_price = $max_price - $rp_max_discount;          

    if ($min_price != $max_price)
    {
        $price = $rp_min_price . '-' . $rp_max_price;
    }
    else
    {
        $price = $rp_min_price;
    }

    return $price;
}

对于单个产品，价格显示正确。对于最小和最大速率相同的变化产品，正确显示，但我的问题是，对于变化价格，从低价格到高价格，它不会像“20-30”那样显示（它只显示最低价格） 你能帮我整理一下吗。

试试这个代码：

    add_action( 'woocommerce_get_price_html' , 'rp_get_price' );

    function rp_get_price($price){
        global $product;

        //get the sale price of the product whether it be simple, grouped or variable
        $sale_price = get_post_meta( get_the_ID(), '_price', true);

        //get the regular price of the product, but of a simple product
        $regular_price = get_post_meta( get_the_ID(), '_regular_price', true);

        $rp_percentage = 10;

        if( $product->is_type( 'simple' ) ):

            $rp_discount = $regular_price * $rp_percentage / 100;
            $price = $regular_price - $rp_discount;

        else:

            if ($regular_price == ""){

            $min_price = $product->get_variation_price( 'min', true );
            $max_price = $product->get_variation_price( 'max', true );

                    $rp_min_discount = $min_price*10/100;
                    $rp_min_price = $min_price - $rp_min_discount;

                    $rp_max_discount = $max_price*10/100;
                    $rp_max_price = $max_price - $rp_max_discount;          


        if ($min_price != $max_price)
        {
        $price = $rp_min_price . '-' . $rp_max_price;
        }
        else
        {
            $price = $rp_min_price;
        }
    }
     endif;

    return $price;
    }

编辑：

    add_action( 'woocommerce_get_price_html' , 'rp_get_price' );

    function rp_get_price($price){
        global $product;

        //get the sale price of the product whether it be simple, grouped or variable
        $sale_price = get_post_meta( get_the_ID(), '_price', true);

        //get the regular price of the product, but of a simple product
        $regular_price = get_post_meta( get_the_ID(), '_regular_price', true);

        $rp_percentage = 10;

        if ($regular_price == ""){
            $currency = get_woocommerce_currency_symbol();

            $min_price = $product->min_variation_price; 

            $max_price = $product->max_variation_price;

                $rp_min_discount = $min_price*10/100; 
                $rp_min_price = $min_price - $rp_min_discount;

                $rp_max_discount = $max_price*10/100;
                $rp_max_price = $max_price - $rp_max_discount;          


            if ($min_price != $max_price)
            {
                $price = $rp_min_price . '-' . $rp_max_price;
            }
            else
            {
                $price = $rp_min_price;
            }
        }
        else{
            $rp_discount = $regular_price * $rp_percentage / 100;
            $price = $regular_price - $rp_discount;
        }
    return $price;
    }

尝试新编辑的代码，因为旧代码不符合标准