เขียนฟอร์มรับค่าจากตัวส่งข้อมูลแล้วขึ้น Error ครับแก้ยังไงครับช่วยชี้แนะทีครับ

if (trim($_POST["title"] != "") || trim($_POST["content"] != "")​​ || trim($_POST["langid"] != "")) {
    if ($_SERVER["REQUEST_METHOD"] == "POST" && $_SESSION["admin"]) {
        include '../../includes/database.php';
        $add = new basedb();
        $add->conn();
        $add->table = "announce";
        $add->field = "title,content,langid,adate,vender_id";	
        $add->values = "'" . $_POST["title"] . "',";
        $add->values .= "'".$_POST["content"]."',";
		$add->values .="'".$_POST["langid"]."',";
        $add->values .= "'".date("Y-m-d H:i:s")."',";
        $add->values .= "'".$_SESSION["vender_id"]."'";
        $query = $add->insert();
        if ($query) {
            header('Location: ../index.php?p=announce&do=home');
        } else {
            session_register("error");
            header('Location: ../index.php?p=announce&do=add');
        }
        @mysql_close();
        exit;
    }
} else {