Helper Prov Kab

//provinsi
function provinsi($name, $table, $field, $pk, $selected) {
    $ci = get_instance();
    $cmb = "<select name='$name' class='form-control'>";
    $data = $ci->db->query("SELECT *FROM $table GROUP BY NAME ASC")->result();
    foreach ($data as $d) {
        $cmb .="<option value='" . $d->$pk . "'";
        $cmb .= $selected == $d->$pk ? " selected='selected'" : '';
        $cmb .=">" . strtoupper($d->$field) . "</option>";
    }
    $cmb .="</select>";
    return $cmb;
}
//kabupaten
function kabupaten($name, $table, $field, $pk, $selected) {
    $ci = get_instance();
    $cmb = "<select name='$name' class='form-control'>";
    $data = $ci->db->query("SELECT regencies.name FROM regencies, provinces WHERE regencies.province_id=provinces.id AND province_id=provinsi($selected)")->result();
    foreach ($data as $d) {
        $cmb .="<option value='" . $d->$pk . "'";
        $cmb .= $selected == $d->$pk ? " selected='selected'" : '';
        $cmb .=">" . strtoupper($d->$field) . "</option>";
    }
    $cmb .="</select>";
    return $cmb;
}