const response = await fetch(
  "https://api.splashpay.co.tz/api/v1/payments/check-status",
  {
    method: "POST",
    headers: {
      "Content-Type": "application/json",
      "X-API-KEY": process.env.SPLASHPAY_KEY,
      "X-API-SECRET": process.env.SPLASHPAY_SECRET,
    },
    body: JSON.stringify({
      reference: "CIR-6723e6ss6",
    }),
  }
);

const data = await response.json();

import requests

response = requests.post(
    "https://api.splashpay.co.tz/api/v1/payments/check-status",
    headers={
        "X-API-KEY": "pk_live_xxxxxxxxx",
        "X-API-SECRET": "sk_live_xxxxxxxxx",
        "Content-Type": "application/json",
    },
    json={
        "reference": "CIR-6723e6ss6"
    }
)

print(response.json())

$client = new \GuzzleHttp\Client();

$response = $client->post(
    'https://api.splashpay.co.tz/api/v1/payments/check-status',
    [
        'headers' => [
            'X-API-KEY' => 'pk_live_xxxxxxxxx',
            'X-API-SECRET' => 'sk_live_xxxxxxxxx',
            'Content-Type' => 'application/json',
        ],
        'json' => [
            'reference' => 'CIR-6723e6ss6',
        ],
    ]
);

echo $response->getBody();