我正在处理WordPress上传元字段。当用户上传图像时，图像的大小是二维的，一个是“拇指”，另一个是“大”，它们的大小调整得非常完美。我使用不同的元键在数据库中保存两个图像维度路径，如：

对于拇指图像wpc_resize_thumb_images 对于大图像wpc_resize_big_images.

当我将图像路径保存在DB中时，它可以完美地保存。

以下是我在DB中保存它们的代码：

For big images

$product_img_path[$count][\'wpc_resize_big_img\'] = $upload_dir[\'url\'].\'/\'.$resize_img_name;
update_post_meta($post->ID, \'wpc_resize_big_images\', $product_img_path);

在数据库中按如下方式保存：

meta_key

wpc\\u resize\\u big\\u图像

meta_value

a:2:{i:1;a:1:{s:18:"wpc_resize_big_img";s:79:"http://localhost/test/wp-content/uploads/2015/06/Wallpaper_55-500x375.jpg";}i:2;a:1:{s:18:"wpc_resize_big_img";s:79:"http://localhost/test/wp-content/uploads/2015/06/Wallpaper_51-500x333.jpg";}}

and for thumb images

$product_img_path[$count][\'wpc_resize_thumb_img\'] = $upload_dir[\'url\'].\'/\'.$resize_img_name;
update_post_meta($post->ID, \'wpc_resize_thumb_images\', $product_img_path);

在数据库中按如下方式保存：

meta_key

wpc\\u resize\\u thumb\\u图像

meta_value

a:2:{i:1;a:1:{s:20:"wpc_resize_thumb_img";s:79:"http://localhost/test/wp-content/uploads/2015/06/Wallpaper_55-212x159.jpg";}i:2;a:1:{s:20:"wpc_resize_thumb_img";s:79:"http://localhost/test/wp-content/uploads/2015/06/Wallpaper_51-212x141.jpg";}}

当我打印它们时，它们会显示如下结果：

Big Imaegs

$wpc_resize_big_images = get_post_meta($post->ID, \'wpc_resize_big_images\', true);
echo "<pre>";
    print_r($wpc_resize_big_images);
echo "</pre>";

结果是

Array
(
    [1] => Array
        (
            [wpc_resize_thumb_img] => http://localhost/test/wp-content/uploads/2015/06/Wallpaper_55-212x159.jpg
        )

    [2] => Array
        (
            [wpc_resize_thumb_img] => http://localhost/test/wp-content/uploads/2015/06/Wallpaper_51-212x141.jpg
        )
)

Thumb Images

$wpc_resize_thumb_images = get_post_meta($post->ID, \'wpc_resize_thumb_images\', true);
echo "<pre>";
    print_r($wpc_resize_thumb_images);
echo "</pre>;

结果是

Array
(
    [1] => Array
        (
            [wpc_resize_big_img] => http://localhost/test/wp-content/uploads/2015/06/Wallpaper_55-500x375.jpg
        )

    [2] => Array
        (
            [wpc_resize_big_img] => http://localhost/test/wp-content/uploads/2015/06/Wallpaper_51-500x333.jpg
        )
)

现在我的问题是，如何用一个元键将两个维度合并并保存到数据库中，当我打印元键时，它会给出如下结果

I want this

Array
(
    [1] => Array
        (
            [wpc_resize_thumb_img] => http://localhost/test/wp-content/uploads/2015/06/Wallpaper_55-212x159.jpg
            [wpc_resize_big_img] => http://localhost/test/wp-content/uploads/2015/06/Wallpaper_55-500x375.jpg
        )

    [2] => Array
        (
            [wpc_resize_thumb_img] => http://localhost/test/wp-content/uploads/2015/06/Wallpaper_51-212x141.jpg
            [wpc_resize_big_img] => http://localhost/test/wp-content/uploads/2015/06/Wallpaper_51-500x333.jpg
        )
)

如果你理解我期望的结果，请给出答案，并请给我测试的答案。请紧急给我答复。我希望你能理解我的问题

$product_img_path[$count][\'wpc_resize_thumb_img\'] = $upload_dir[\'url\'].\'/\'.$resize_img_name;
$product_img_path[$count][\'wpc_resize_bid_img\'] = $upload_dir[\'url\'].\'/\'.$resize_big_img_name;
update_post_meta($post->ID, \'wpc_images\', $product_img_path);

Array
(
    [1] => Array
        (
            [wpc_resize_thumb_img] => http://localhost/test/wp-content/uploads/2015/06/Wallpaper_55-212x159.jpg
            [wpc_resize_big_img] => http://localhost/test/wp-content/uploads/2015/06/Wallpaper_55-500x375.jpg
        )

[2] => Array
    (
        [wpc_resize_thumb_img] => http://localhost/test/wp-content/uploads/2015/06/Wallpaper_51-212x141.jpg
        [wpc_resize_big_img] => http://localhost/test/wp-content/uploads/2015/06/Wallpaper_51-500x333.jpg
    )
)