engineN/app/Controllers/Kewilayahan/Ref.php

<?php
namespace App\Controllers\Kewilayahan;

use CodeIgniter\Controller;

class Ref extends Controller
{

    public function propinsi()
    {

        $db   = \Config\Database::connect();
        $data = $db->table('KPDL_V_BATAS_DESA')->where('ADM1_PCODE IS NOT NULL')->select('ADM1_PCODE as value, ADM1_EN as label')->distinct()->orderBy('ADM1_EN')->get()->getResult();

        foreach ($data as $key => $val) {
            $val->value = $val->value;
        }

        return json_encode($data);
    }

    public function kota()
    {
        $db   = \Config\Database::connect();
        $data = $db->table('KPDL_V_BATAS_DESA')
            ->select('ADM2_PCODE as value, ADM2_EN as label')
            ->distinct()
            ->where('ADM2_PCODE IS NOT NULL')
            ->where('ADM1_PCODE', $this->request->getGet('prop'))
            ->orderBy('ADM2_EN')->get()->getResult();
        return json_encode($data);
    }

    public function kecamatan()
    {
        $db   = \Config\Database::connect();
        $data = $db->table('KPDL_V_BATAS_DESA')
            ->select('ADM3_PCODE as value, ADM3_EN as label')
            ->distinct()
            ->where('ADM3_PCODE IS NOT NULL')
            ->where('ADM2_PCODE', $this->request->getGet('kota'))
            ->orderBy('ADM3_EN')->get()->getResult();
        return json_encode($data);
    }

    public function kelurahan()
    {
        $db   = \Config\Database::connect();
        $data = $db->table('KPDL_V_BATAS_DESA')
            ->select('ADM4_PCODE as value, ADM4_EN as label')
            ->distinct()
            ->where('ADM4_PCODE IS NOT NULL')
            ->whereIn('ADM3_PCODE', $this->request->getGet('kec'))
            ->orderBy('ADM4_EN')->get()->getResult();
        return json_encode($data);
    }

    public function zpkanwil()
    {

        $db   = \Config\Database::connect();
        $data = $db->table('KPDL_ZP_NAS_DIFF')
            ->select('KD_KANWIL as value,  NM_KANWIL as label')
            ->distinct()
            ->orderBy('NM_KANWIL')->get()->getResult();

        foreach ($data as $key => $val) {
            $val->value = $val->value;
        }

        return json_encode($data);
    }

    public function zpkpp()
    {
        $db   = \Config\Database::connect();
        $data = $db->table('KPDL_ZP_NAS_DIFF')
            ->select('KD_KPP as value, NM_KPP as label')
            ->distinct()
            ->where('KD_KANWIL', $this->request->getGet('kanwil'))
            ->orderBy('NM_KPP')->get()->getResult();
        return json_encode($data);
    }

    public function zpseksi()
    {
        $db   = \Config\Database::connect();
        $data = $db->table('KPDL_ZP_NAS_DIFF')
            ->select('KD_UNIT_OR as value, SEKSI as label')
            ->distinct()
            ->whereIn('KD_KPP', $this->request->getGet('kpp'))
            ->orderBy('SEKSI')->get()->getResult();
        return json_encode($data);
    }

    public function zpar()
    {
        $db    = \Config\Database::connect();
        $kpp   = $this->request->getGet('kpp');
        $seksi = $this->request->getGet('seksi');

        $data = $db->table('KPDL_ZP_NAS_DIFF')
            ->select('NIP_AR as value, NM_AR as label')
            ->distinct()
            ->whereIn('KD_KPP', $kpp)
            ->whereIn('KD_UNIT_OR', $seksi)
            ->orderBy('NM_AR')->get()->getResult();
        return json_encode($data);
    }
    public function zpzp()
    {
        $db    = \Config\Database::connect();
        $kpp   = $this->request->getGet('kpp');
        $seksi = $this->request->getGet('seksi');
        $ar    = $this->request->getGet('ar');
        $data  = $db->table('KPDL_ZP_NAS_DIFF')
            ->select("OGC_FID as value, NO_URUT || '-' || ATTRIBUTE1 as label")
            ->distinct()
            ->whereIn('KD_KPP', $kpp)
            ->whereIn('KD_UNIT_OR', $seksi)
            ->whereIn('NIP_AR', $ar)
            ->orderBy('LABEL')->get()->getResult();
        foreach ($data as $key => $value) {
            $value->label = $value->LABEL;
            unset($value->LABEL);

        }
        return json_encode(($data));
    }

    public function change_case($arr)
    {
        return array_change_key_case($arr, CASE_LOWER);
    }

}