@Webekir;
Whatsapp butonu ekliyor(hemen al) müşteri butona tıkladığında seçtigi varyasyon ürün seçenek - fiyat bilgisi tüm detaylar ilk mesajda yer alıyor.

add_action('woocommerce_after_add_to_cart_button', 'ecommercehints_content_after_add_to_cart_form', 30);
function ecommercehints_content_after_add_to_cart_form() {
    global $product;

    if( ! is_a('WC_Product', $product) ) {
        $product = wc_get_product( get_the_id() );
    }
    // Not for variable products
    if( ! $product || 'variable' === $product->get_type() ) return;

    // Get the product name
    $product_title = $product->get_name();

    // Get the product URL
    $product_url = $product->get_permalink();

    // Get the product price
    $product_price = strip_tags( wc_price( wc_get_price_to_display( $product, array( 'price' => $product->get_price() ) ) ) );
    
    // Button CSS
    ?>
    <style>
    .order_on_whatsapp {
        display: flex;
        justify-content: center;
        align-items: center;
        height: 60px;
        border-radius: 3px;
        background-color: #fff;
        color: #131313;
        padding: 10px;
        vtext-decoration: none;
        font-weight: 700;
        border: 2px solid #5e51b6;
        font-size: 115%;
    }
    .order_on_whatsapp:hover{
        background-color: #6051BA;
        color: #fff;  
    }
    .order_on_whatsapp img {
        margin-right: 10px;
        width: 14px;
    }
    </style>
    <?php
    // Output the WhatsApp button with the product's title and URL in the pre-filled message
    echo '<a href="https://api.whatsapp.com/send?phone=+905003007245&text=Merhaba,%20Bu%20ürünü%20almak%20istiyorum:%20' .
    $product_title . '%20-%20' .
    $product_price . '%20(' . $product_url . ')" class="order_on_whatsapp">
    <img src="https://woo.cdesksolutions.com/wp-content/uploads/2022/11/whatsapp.webp" width="14px">
         Hemen AL
    </a>';
}

// Add variation custom field data to single variable product form
add_filter( 'woocommerce_available_variation', 'add_variation_custom_field_to_variable_form', 10, 3 );
function add_variation_custom_field_to_variable_form( $variation_data, $product, $variation ) {
    $variation_data['name']  = $variation->get_name(); // Product Variation name
    $variation_data['url']   = $variation->get_permalink(); // Product Variation URL
    $variation_data['main_url'] = $product->get_permalink(); // Parent Variable Product URL

    return $variation_data;
}

// For variable products
add_action( 'woocommerce_after_variations_form', 'display_selected_variation_custom_field_js' );
function display_selected_variation_custom_field_js(){
    // Button CSS
    ?>
    <style>
    .order_on_whatsapp {
        display: flex;
        justify-content: center;
        align-items: center;
        height: 60px;
        border-radius: 3px;
        background-color: #fff;
        color: #131313;
        padding: 10px;
        vtext-decoration: none;
        font-weight: 700;
        border: 2px solid #5e51b6;
        font-size: 115%;
    }
    .order_on_whatsapp:hover{
        background-color: #6051BA;
        color: #fff;  
    }
    .order_on_whatsapp img {
        margin-right: 10px;
        width: 14px;
    }
    .order_on_whatsapp.disabled {
        opacity: .5 !important;
        cursor: not-allowed;
    }
    .order_on_whatsapp.disabled:hover {
        background-color: #fff;
        color: #131313;  
    }
    </style>
    <?php
    
    // Javascript
    ?>
    <script type="text/javascript">
    (function($){
        var href = 'https://api.whatsapp.com/send?phone=+905003570045&text=Merhaba,%20Bu%20urunu%20almak%20istiyorum:%20';
        $('form.cart').on('show_variation', function(event, data) {
            $('.order_on_whatsapp').removeClass('disabled').attr( 'href', href + data.name + '%20-%20TL' + data.display_price + '%20(' +  data.url + ')' );
        }).on('hide_variation', function(event) {
            $('.order_on_whatsapp').removeAttr('href').addClass('disabled');
        });
    })(jQuery);
    </script>
    <?php
    // Display button
    echo '<a class="order_on_whatsapp">
    <img src="https://woo.cdesksolutions.com/wp-content/uploads/2022/11/whatsapp.webp" width="14px">
         Hemen AL
    </a>';
}

@Lazo61;

temanızın functions.php dosyasına ekleniyor. denemeden önce yedek alınız