How to create and print shipment label using codeigniter

Code:
Hi, would like to enquire how to create and print shipment label from own website using rest api. Have change the code 

below based on     https://docs.postmen.com/dhl-global-mail-asia.html?sdk=php#labels-create-a-label. Please advise. Thanks.



POST

<?php

    

        $url = 'https://sandbox.api.com/v3/labels';

        $method = 'POST';

        $headers = array(

            "content-type: application/json",

            "api-key: secretkey"

        );

        $body = '{"labelreq":{

            "accesstoken":""

            },

            "shipperaddr":{

            "company":"",

            },

            "consigneeaddr":{

            "address":""

             },

           }';

    

        $curl = curl_init();

    

        curl_setopt_array($curl, array(

            CURLOPT_RETURNTRANSFER => true,

            CURLOPT_URL => $url,

            CURLOPT_CUSTOMREQUEST => $method,

            CURLOPT_HTTPHEADER => $headers,

            CURLOPT_POSTFIELDS => $body

        ));

    

        $response = curl_exec($curl);

        $err = curl_error($curl);

    

        curl_close($curl);

    

        if ($err) {

            echo "cURL Error #:" . $err;

        } else {

            echo $response;

        }

    ?>

    



GET





<?php

    

        $url = 'https://sandbox.api.com/v3/labels/accesstokenkey';

        $method = 'GET';

        $headers = array(

            "content-type: application/json",

            "api-key: secretkey"

        );

    

        $curl = curl_init();

    

        curl_setopt_array($curl, array(

            CURLOPT_RETURNTRANSFER => true,

            CURLOPT_URL => $url,

            CURLOPT_CUSTOMREQUEST => $method,

            CURLOPT_HTTPHEADER => $headers,

        ));

    

        $response = curl_exec($curl);

        $err = curl_error($curl);

    

        curl_close($curl);

    

        if ($err) {

            echo "cURL Error #:" . $err;

        } else {

            echo $response;

        }

    ?>