I have an image set using ACF in the admin area for a custom post type, using the following in the header gets me an empty array:
`$image = get_field(‘background_image’);
The key is 100% correct it has been copied and pasted, I have also used the meta_key to no avail.
I have tried every example on this page http://www.advancedcustomfields.com/resources/image/ and nothing works…
If I try:
`$img = get_post_meta(81, ‘background_image’);
Array (  => 82 )
Any help would be great! I have been racking my brains all morning on this.
Since you are in header.php you are outside of “The Loop”, you will need to supply the get_field() function with the post ID;
$queried_object = get_queried_object();
$image = get_field('background_image', $queried_object->ID);
Thanks! This works… if I hardcode the post ID, so at the moment I have:
$image = get_field('background_image', 81);
if I do a dump on get_queried_object(); I get null.