Get the minimum variation price in WooCommerce

Question

I am a beginner trying to learn Wordpress and have a variable product with prices:

• cod Rs 250
• online Rs 200

I want to use the minimum price in my themes functions.php.

How will I be able to fetch or get the minimum value?

I want to use in the below code :

function filter_gateways($gateways){

    $payment_NAME = 'cod'; // 
    $min_variation_price = ''; <--------------- minimum variation price

    global $woocommerce;

    foreach ($woocommerce->cart->cart_contents as $key => $values ) {
        // Get the terms, i.e. category list using the ID of the product
        $terms = get_the_terms( $values['product_id'], 'product_cat' );
        // Because a product can have multiple categories, we need to iterate through the list of the products category for a match
        foreach ($terms as $term) {
            // 20 is the ID of the category for which we want to remove the payment gateway
            if($term->term_id == $min_variation_price){
                unset($gateways[$payment_NAME]);
                // If you want to remove another payment gateway, add it here i.e. unset($gateways['cod']);
                break;
            }
            break;
        }
    }
    return $gateways;
}

Answer 1

To get the minimum variation active price in WooCommerce from a WC_Product_Variable object:

$variation_min_price = $product->get_variation_price();

It seems that you are trying here to unset 'cod' payment gateway when a cart item min variation price is matching with his product category ID.

Using the WordPress conditional function has_term() will really simplify your code (it accepts term Ids, term slugs or term names for any taxonomy (as 'product_cat' here for product categories).

I suppose that your function is hooked in woocommerce_available_payment_gateways filter hook…

I made some changes in your code as it's a bit outdated and with some errors:

add_filter('woocommerce_available_payment_gateways', 'conditional_payment_gateways', 10, 1);
function conditional_payment_gateways( $available_gateways ) {
    // Not in backend (admin)
    if( is_admin() ) 
        return $available_gateways;

    foreach (WC()->cart->get_cart() as $cart_item_key => $cart_item ) {
        // Get the WC_Product object
        $product = wc_get_product($cart_item['product_id']);
        // Only for variable products
        if($product->is_type('variable')){
            // Get the Variation "min" price
            $variation_min_price = $product->get_variation_price();
            // If the product category match with the variation 'min" price
            if( has_term( $variation_min_price, 'product_cat', $cart_item['product_id'] ) ){
                // Cash on delivery (cod) payment gateway
                unset($available_gateways['cod']); // unset 'cod'
                break; // stop the loop
            }
        }
    }
    return $available_gateways;
}

Code goes in functions.php file of your active child theme (or theme) or also in any plugin file.

This should work (but I can't really test it as it's very specific regarding the product categories ID and the min variation prices)…

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All related price methods for variable product type:

// All prices: multidimensional array with all variation prices (including active prices, regular prices and sale prices). 
$prices = $product->get_variation_prices();
$prices_for_display = $product->get_variation_prices( true ); // For display

// The min or max active price.
$min_price = $product->get_variation_price(); // Min active price
$min_price_for_display = $product->get_variation_price('min', true); // Min active price for display
$max_price = $product->get_variation_price('max'); // Max active price
$max_price_for_display = $product->get_variation_price('max', true); // Max active price for display

// The min or max regular price.
$min_price = $product->get_variation_regular_price(); // Min regular price
$min_price_for_display = $product->get_variation_regular_price('min', true); // Min regular price for display
$max_price = $product->get_variation_regular_price('max'); // Max regular price
$max_price_for_display = $product->get_variation_regular_price('max', true); // Max regular price for display

// The min or max sale price.
$min_price = $product->get_variation_sale_price(); // Min sale price
$min_price_for_display = $product->get_variation_sale_price('min', true); // Min sale price for display
$max_price = $product->get_variation_sale_price('max'); // Max sale price
$max_price_for_display = $product->get_variation_sale_price('max', true); // Max sale price for display

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Related answers:

Disable WooCommerce Payment methods if cart item quantity limit is reached