Question

我将以下代码用于带有自定义字段的wordpress模板：

<?php

// vars
$special_product = get_field('special_product', $term); 

if (!get_field('special_product') )
if ( $special_product): ?>
<div class="container_wrap container_wrap_first main_color sidebar_right 
template-shop">
  <div class="container">
    <div class="container-left-sp single-product-main-image alpha">

    <a class="lightbox-added lightbox avia_image" href="<?php echo $special_product['image']['url']; ?>"  rel="lightbox" title="" rel="product_images[grouped]">
    <img src="<?php echo $special_product['image']['url']; ?>" alt="<?php echo $special_product['image']['alt']; ?>" /></a>

    <div class="thumbnails">

    <a class="lightbox-added lightbox avia_image thumb-image" href="<?php echo $special_product['thumb1']['url']; ?>"  rel="lightbox" title="" rel="product_images[grouped]">
    <img width="100" height="100" src="<?php echo $special_product['thumb1']['url']; ?>" class="attachment-shop_thumbnail size-shop_thumbnail" alt="<?php echo $special_product['thumb1']['alt']; ?>" /></a>
           <a class="lightbox-added lightbox avia_image thumb-image" href="<?php echo $special_product['thumb2']['url']; ?>"  rel="lightbox" title="" rel="product_images[grouped]">
    <img width="100" height="100" src="<?php echo $special_product['thumb2']['url']; ?>" class="attachment-shop_thumbnail size-shop_thumbnail" alt="<?php echo $special_product['thumb2']['alt']; ?>" /></a>
           <a class="lightbox-added lightbox avia_image thumb-image" href="<?php echo $special_product['thumb3']['url']; ?>"  rel="lightbox" title="" rel="product_images[grouped]">
    <img width="100" height="100" src="<?php echo $special_product['thumb3']['url']; ?>" class="attachment-shop_thumbnail size-shop_thumbnail" alt="<?php echo $special_product['thumb3']['alt']; ?>" /></a>
    </div>

</div>
<div class="container-right-sp single-product-summary">
    <?php echo $special_product['description']; ?>
    <a class="avia-slideshow-button avia-button avia-color-orange avia-multi-slideshow-button" href="<?php echo $special_product['product-link']['url']; ?>">
    Zum Produkt</a>
    </div>    

        <div>
</div>
</div> <!--close container -->
</div>   <!--close container_wrap --> 

<?php endif; ?>

使用代码if（！get_field（'special_product'））时，我试图隐藏自定义字段，但自定义字段为空但无效。我怎么藏起来？

最诚挚的问候

克里斯

补充：＆special_product的输出（自定义字段为空时）为：

Array（[image] => [description] => [product-link] => [thumb1] => [thumb2] => [thumb3] =>）

Answer 1

运行print_r（$ special_product）时，您得到：

Array ( [image] => [description] => [product-link] => [thumb1] => [thumb2] => [thumb3] => )

由于empty字段返回的是一个空数组，而不是一无所有，因此永远不能将其视为空，因此您需要检查数组中的键以查看键值是否为空。

我告诉它检查该数组的图像字段以查看其是否为空。

如果您的产品不会总是有图像，那么可以随时对其进行更改，以检查是否存在始终存在的字段。

这是您的工作代码：

// vars
$special_product = get_field('special_product', $term); 

<?php if ( $special_product['image'] ): ?>
    <div class="container_wrap container_wrap_first main_color sidebar_right 
    template-shop">
        <div class="container">
            <div class="container-left-sp single-product-main-image alpha">
                <a class="lightbox-added lightbox avia_image" href="<?php echo $special_product['image']['url']; ?>"  rel="lightbox" title="" rel="product_images[grouped]">
                <img src="<?php echo $special_product['image']['url']; ?>" alt="<?php echo $special_product['image']['alt']; ?>" /></a>

                <div class="thumbnails">
                    <a class="lightbox-added lightbox avia_image thumb-image" href="<?php echo $special_product['thumb1']['url']; ?>"  rel="lightbox" title="" rel="product_images[grouped]">
                    <img width="100" height="100" src="<?php echo $special_product['thumb1']['url']; ?>" class="attachment-shop_thumbnail size-shop_thumbnail" alt="<?php echo $special_product['thumb1']['alt']; ?>" /></a>
                    <a class="lightbox-added lightbox avia_image thumb-image" href="<?php echo $special_product['thumb2']['url']; ?>"  rel="lightbox" title="" rel="product_images[grouped]">
                    <img width="100" height="100" src="<?php echo $special_product['thumb2']['url']; ?>" class="attachment-shop_thumbnail size-shop_thumbnail" alt="<?php echo $special_product['thumb2']['alt']; ?>" /></a>
                    <a class="lightbox-added lightbox avia_image thumb-image" href="<?php echo $special_product['thumb3']['url']; ?>"  rel="lightbox" title="" rel="product_images[grouped]">
                    <img width="100" height="100" src="<?php echo $special_product['thumb3']['url']; ?>" class="attachment-shop_thumbnail size-shop_thumbnail" alt="<?php echo $special_product['thumb3']['alt']; ?>" /></a>
                </div>
            </div>
            <div class="container-right-sp single-product-summary">
                <?php echo $special_product['description']; ?>
                <a class="avia-slideshow-button avia-button avia-color-orange avia-multi-slideshow-button" href="<?php echo $special_product['product-link']['url']; ?>">
            Zum Produkt</a>
            </div>    
        </div> <!--close container -->
    </div>   <!--close container_wrap --> 
<?php endif; ?>

当它们为空时隐藏ACF字段

1 个答案: