How to check the array of featured images IDs

Question

I'm trying to show some specific text on top of the featured images depending on their IDs. Some of the featured images will have the same text.

$post_thumbnail_id = get_post_thumbnail_id();

if($post_thumbnail_id =='2030') {
echo '<span>Location</span>';
}

How do I check the array of $post_thumbnail_id?

The following example does not work.

if($post_thumbnail_id == array('1000','2000'))

Answer 1

This is solely a PHP question. But as birgire mentioned, you can use in_array(). So, change your code to this:

$post_thumbnail_id = get_post_thumbnail_id();

if( in_array( $post_thumbnail_id, array(1, 2, 3 ) ) ) {
    echo '<span>Location</span>';
}

The first argument is your value, the second one is the array you want to search in.