尝试获取附件网址后未定义的网址
问题描述：
In the backend of WordPress, I have an option where the user can add multiple images. These images will then be explode'd an shown within the li, that's the aim anyway.
But I'm receiving undefined index url on $result .= $attachmentImage ? $attachmentImage['url'] : '';.
Markup:
$image = shortcode_atts(
array(
'image' => 'image',
),
$atts
);
$image_ids = explode(',',$image['image']);
$result = "<div class='imageCarousel'>";
$result .= "<div class='imageCarousel__container justify-content-center'>";
$result .= "<ul>";
foreach( $image_ids as $image_id ){
$result .='<li>';
$result .= 'test'. $image_id;
$attachmentImage = wp_get_attachment_image_src( $image_id, 'full' );
$result .= $attachmentImage ? $attachmentImage['url'] : '';
$result .='</li>';
}
$result .= "</ul>";
$result .= "</div>";
$result .= "</div>";
return $result;
A var_dump($attachmentImage) returns nothing?
答
Based on the code, while calling the short code need to add the valid image id by comma separated.
like.
//image1 is name of shortcode, and 10,11,12 is valid id of image
echo do_shortcode('[image1 image=10,11,12]');
you are getting Receiving 'undefined index url' because wp_get_attachment_image_src return an array with the following elements.
[0] => url
[1] => width
[2] => height
[3] = >
So in code you have need to get the image url by $attachmentImage['0'].
//$attachmentImage['0'] - will display the url of image
$result .= $attachmentImage ? $attachmentImage['0'] : '';