<?php
$ch = curl_init("https://domhanda.com/api/create-invoice");
curl_setopt_array($ch, [
  CURLOPT_POST => true,
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer YOUR_API_KEY",
    "Content-Type: application/json"
  ],
  CURLOPT_POSTFIELDS => json_encode([
    "order_id"   => "ORDER-123",
    "amount"     => 100,
    "min_amount" => 50,
    "return_url" => "https://yoursite.com/thanks"
  ])
]);
$res = json_decode(curl_exec($ch), true);
header("Location: " . $res["pay_url"]);   // redirect user

import requests

r = requests.post(
    "https://domhanda.com/api/create-invoice",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={
        "order_id": "ORDER-123",
        "amount": 100,
        "min_amount": 50,
        "return_url": "https://yoursite.com/thanks",
    },
)
pay_url = r.json()["pay_url"]   # redirect the customer here

const res = await fetch("https://domhanda.com/api/create-invoice", {
  method: "POST",
  headers: {
    "Authorization": "Bearer YOUR_API_KEY",
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    order_id: "ORDER-123",
    amount: 100,
    min_amount: 50,
    return_url: "https://yoursite.com/thanks"
  })
});
const { pay_url } = await res.json();   // redirect customer to pay_url