- Your function
get_postid()does not return anything. It should return the id:
function get_postid() {
global $post;
return $post->ID;
}
- If you are going to use the
$post_idI guess your firstifstatement is wrong, because the$post_idshould be evaluated totruenotfalse. So it should be like this:if ( $post_id ):
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