user12289

My function

function linkReplace($post_content){

        if(preg_match_all('#href="/\?page_id=(\d*?)"#i', $post_content, $m)){
            $search = array();
            $replace = array();
            foreach ($m[1] as $page_id) {
                $search[] = '/?page_id='.$page_id;
                $replace[] = get_permalink($page_id);
            }
            return str_replace($search, $replace, $post_content);
        }
        return $post_content;
    }

But how can i use php code in post’s content (admin-posts-all posts- edit)? It doesn’t work.