PDO (try.. catch..)

<?php
    require_once "dbconn.php";

    $upload_dir  = "../../assets/foto";
    $kata_sandi  = isset($_POST["kata_sandi"]) ? $_POST["kata_sandi"] : "FALSE";
    $kata_sandi2 = isset($_POST["kata_sandi2"]) ? $_POST["kata_sandi2"] : "FALSE";
    $id_pengguna = isset($_POST["id_pengguna"]) ? $_POST["id_pengguna"] : "FALSE";
    $foto        = isset($_FILES["foto"]["name"]) ? $_FILES["foto"]["name"] : "FALSE";

    try {
        if ($kata_sandi == $kata_sandi2) {
            if (empty($kata_sandi2)) {
                $sql1 = $con->prepare("UPDATE tbl_penggunas SET foto = ? WHERE id_pengguna = ?");
                $sql1->bindParam(1, $foto);
                $sql1->bindParam(2, $id_pengguna);

                if ($sql1->execute()) {
                    move_uploaded_file($_FILES['foto']['tmp_name'], "$upload_dir/$foto");
                    header("location: http://tasselearning.ac.id/e-learning/mahasiswa/index.php?file=gantidatadiri");
                }
            } else {
                $new_katasandi2 = password_hash($kata_sandi2, PASSWORD_DEFAULT);
                $sql1 = $con->prepare("UPDATE tbl_pengguna SET kata_sandi = ? WHERE id_pengguna = ?");
                $sql1->bindParam(1, $new_katasandi2);
                $sql1->bindParam(2, $id_pengguna);

                if ($sql1->execute()) {
                    header("location: http://tasselearning.ac.id/e-learning/mahasiswa/index.php?file=gantidatadiri");
                }
            }
        } else {
            header("location: http://tasselearning.ac.id/elearning/mahasiswa/index.php?file=gantidatadiri");
        }

    } catch (exception $e) {
        echo $e->getMessage();
    }