<div id="liqpay_checkout"></div>
<script>
    window.LiqPayCheckoutCallback = function() {
	    LiqPayCheckout.init({
			data: "eyAidmVyc2lvbiIgOiAzLCAicHVibGljX2tleSIgOiAieW91cl9wdWJsaWNfa2V5IiwgImFjdGlv" +
			"biIgOiAicGF5IiwgImFtb3VudCIgOiAxLCAiY3VycmVuY3kiIDogIlVTRCIsICJkZXNjcmlwdGlv" +
			"biIgOiAiZGVzY3JpcHRpb24gdGV4dCIsICJvcmRlcl9pZCIgOiAib3JkZXJfaWRfMSIgfQ==",
			signature: "QvJD5u9Fg55PCx/Hdz6lzWtYwcI=",
			embedTo: "#liqpay_checkout",
			language: "ru",
			mode: "embed" // embed || popup
	    }).on("liqpay.callback", function(data){
	    	console.log(data.status);
	    	console.log(data);
	    }).on("liqpay.ready", function(data){
	    	// ready
	    }).on("liqpay.close", function(data){
	    	// close
	    });
	};
</script>
<script src="//static.liqpay.ua/libjs/checkout.js" async></script>

#!/bin/bash
PUBLIC_KEY='your_public_key'
PRIVATE_KEY='your_private_key'
JSON="{ 
\"version\" : 3,
\"public_key\" : \"${PUBLIC_KEY}\", 
\"action\" : \"pay\", 
\"amount\" : 1, 
\"currency\" : \"USD\",
\"description\" : \"description text\",
\"order_id\" : \"order_id_1\"
}"
# DATA is base64_encode result from JSON string
DATA=$(echo -n ${JSON} | base64)
# SIGNATURE is base64 encode result from sha1 binary hash from concatenate string ${PRIVATE_KEY}${DATA}${PRIVATE_KEY}
SIGNATURE=$(echo -n "${PRIVATE_KEY}${DATA}${PRIVATE_KEY}" | openssl dgst -binary -sha1 | base64)
echo "data: ${DATA}"
echo "signature: ${SIGNATURE}"

# DATA in this example
# eyAidmVyc2lvbiIgOiAzLCAicHVibGljX2tleSIgOiAieW91cl9wdWJsaWNfa2V5IiwgImFjdGlv
# biIgOiAicGF5IiwgImFtb3VudCIgOiAxLCAiY3VycmVuY3kiIDogIlVTRCIsICJkZXNjcmlwdGlv
# biIgOiAiZGVzY3JpcHRpb24gdGV4dCIsICJvcmRlcl9pZCIgOiAib3JkZXJfaWRfMSIgfQ==

# SIGNATURE in this example
# QvJD5u9Fg55PCx/Hdz6lzWtYwcI=

$liqpay = new LiqPay($public_key, $private_key);
$html = $liqpay->cnb_form(array(
'action'         => 'pay',
'amount'         => '1',
'currency'       => 'USD',
'description'    => 'description text',
'order_id'       => 'order_id_1',
'version'        => '3'
));

HashMap<String, String> params = new HashMap<String, String>();
params.put("action", "pay");
params.put("amount", "1");
params.put("currency", "USD");
params.put("description", "description text");
params.put("order_id", "order_id_1"); 
params.put("version", "3"); 
LiqPay liqpay = new LiqPay(PUBLIC_KEY, PRIVATE_KEY);
String html = liqpay.cnb_form(params);    
System.out.println(html);

 
liqpay = LiqPay(public_key, private_key)
html = liqpay.cnb_form({
"action"         : "pay",
"amount"         : "1",
"currency"       : "USD",
"description"    : "description text",
"order_id"       : "order_id_1",
"version"        : "3"
})

liqpay = Liqpay::Liqpay.new(
:public_key  => 'public_key',
:private_key => 'private_key'
)
html = liqpay.cnb_form({
:action         => "pay",
:amount         => "1",
:currency       => "USD",
:description    => "description text",
:order_id       => "order_id_1",
:version        => "3"
})

LiqPay = liqpay:init(PublicKey, PrivateKey),
Html = liqpay:cnb_form([ 
{<<"action">>,      <<"pay">>}, 
{<<"amount">>,      <<"1">>}, 
{<<"currency">>,    <<"USD">>}, 
{<<"description">>, <<"description text">>}, 
{<<"order_id">>,    <<"order_id_1">>},
{<<"version">>,     <<"3">>}
], LiqPay)

var LiqPay = require('liqpay');
var liqpay = new LiqPay(public_key, private_key);
var html = liqpay.cnb_form({
'action'         : 'pay',
'amount'         : '1',
'currency'       : 'USD',
'description'    : 'description text',
'order_id'       : 'order_id_1',
'version'        : '3'
});

my $liqpay = Liqpay->new($public_key,$private_key);
my $html = $liqpay->cnb_form({
'action'         => 'pay',
'amount'         => '1',
'currency'       => 'USD',
'description'    => 'description text',
'order_id'       => 'order_id_1',
'version'        => '3'
}
);

[
  {
    "public_key": "i000000001",
    "amount": 1,
    "commission_payer": "sender",
    "server_url": "https://server1/callback"
  },
  {
    "public_key": "i000000002",
    "amount": 2,
    "commission_payer": "receiver",
    "server_url": "https://server2/callback"
  }
]

{
  "airLine": "Avia", // абревиатура авиакомпании, max 4 символов.
  "ticketNumber": "ACSFD12354SA", // номер билета, max 15 символов. 
  "passengerName": "John Doe", // имя пассажира, max 29 символов.
  "flightNumber": "742", // номер рейса, max 5 цифр.
  "originCity": "DP", // код города/аэропорта вылета, max 5 символов.
  "destinationCity": "NY", // код города/аэропорта назначения, max 5 символов.
  "departureDate": "100514" // дата вылета в формате YYMMDD, max 6 цифр.
}