I want unique post title in wordpress. How do I do it?

// Builds complete user id function build_home_id ($pcode_id, $assigned_id_no) { //$cmplt_id = $pcode_id . "-" . number_pad($assigned_id_no,3); // Gets postcode string and calls the number padding function to add the leading0's do { $cmplt_id = $pcode_id . "-" . number_pad($assigned_id_no,3); // Gets postcode string and calls the number padding function to add the leading0's $assigned_id_no++; // Increase assigned_id_no $existing = get_page_by_title($cmplt_id, OBJECT, "patient"); $existing_post = $existing->post_title; } while($cmplt_id == $existing_post); // Restart loop if built id matches any already in existance return $cmplt_id; }

will you please elaborate a bit, your question not clearly specify what to do?