WordPress: Get the file name from get_post_meta custom field

Last updated on August 18th, 2017

get_post_meta returns the ID of the post attachment. To get the file name of a custom field called pdf:

$doc_id = get_post_meta( get_the_ID(), 'pdf', true );
$filename = basename( get_attached_file( $doc_id ) );
echo $filename;

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