curl --request GET \
  --url https://api.staging.kairosafrika.cloud/paygw/v1/accountholders/233559400612 \
  --header 'Authorization: Basic $(echo -n "username:password" | base64)'

const username = 'your_username';
const password = 'your_password';
const credentials = btoa(`${username}:${password}`);

const response = await fetch('https://api.staging.kairosafrika.cloud/paygw/v1/accountholders/233559400612', {
  method: 'GET',
  headers: {
    'Authorization': `Basic ${credentials}`
  }
});

const result = await response.json();
console.log(result);

import requests
import base64

username = 'your_username'
password = 'your_password'
credentials = base64.b64encode(f'{username}:{password}'.encode()).decode()

response = requests.get(
    'https://api.staging.kairosafrika.cloud/paygw/v1/accountholders/233559400612',
    headers={
        'Authorization': f'Basic {credentials}'
    }
)

result = response.json()
print(result)

<?php
$username = 'your_username';
$password = 'your_password';
$credentials = base64_encode($username . ':' . $password);

$curl = curl_init();

curl_setopt_array($curl, array(
  CURLOPT_URL => 'https://api.staging.kairosafrika.cloud/paygw/v1/accountholders/233559400612',
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => '',
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 0,
  CURLOPT_FOLLOWLOCATION => true,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => 'GET',
  CURLOPT_HTTPHEADER => array(
    'Authorization: Basic ' . $credentials
  ),
));

$response = curl_exec($curl);
curl_close($curl);
echo $response;
?>