如果没有图像，则禁用下载

Question

HTML部分在下面给出

<a download="<?php echo $value['product_name']; ?>" href="Image/<?php echo $value['product_image']; ?>" title="<?php echo $value['product_name']; ?>" style = "cursor: not-allowed" class="download" disabled="disabled"> Download</a>

如果数据库中没有图像，如何阻止用户下载图像？

Answer 1

在if声明中：

<?php if ($value['product_image']){?>

<a download="<?php echo $value['product_name']; ?>" href="Image/<?php echo $value['product_image']; ?>" title="<?php echo $value['product_name']; ?>" style = "cursor: not-allowed" class="download" disabled="disabled"> Download</a>

{?php } ?>