Curl Dukcapil

$this->load->library('curl');
header('Content-Type: application/json');
        $nik    = '3320015809580001';
        $post = [
            'user_id'   => 'DISPERKIM',
            'password'  => 'rumah',
            'nik'       => $nik,
        ];

        $ch = curl_init('http://222.124.25.110:8000/dukcapil/get_json/DISPERKIM/NIK'); // Link API Dukcapil
        curl_setopt($ch, CURLOPT_HTTPHEADER, array( 'Content-Type: application/json'));
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
        $curl_response = curl_exec($ch);
        curl_close($ch);
        $curl_jason = json_decode($curl_response, true);
        print_r($curl_jason);