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In this example we will display some conversions using bitpays api. the url we are interested in is located at https://bitpay.com/api/rates

This is abbreviated output
[
{“code”:”BTC”,”name”:”Bitcoin”,”rate”:1},
{“code”:”BCH”,”name”:”Bitcoin Cash”,”rate”:6.327061},
{“code”:”USD”,”name”:”US Dollar”,”rate”:9095.53},
{“code”:”EUR”,”name”:”Eurozone Euro”,”rate”:7609.91},
{“code”:”GBP”,”name”:”Pound Sterling”,”rate”:6698.966991},
{“code”:”JPY”,”name”:”Japanese Yen”,”rate”:998393.589275},

Th example below will display conversions but can be affected if the api changes, in the example below you will see lines of code like the following

$rateUSD = $data[2][“rate”];

which corresponds to

{“code”:”USD”,”name”:”US Dollar”,”rate”:9095.53},

Obviously if bitpay were to change this it would display incorrect results

Code

[php]

<?php
$url = “https://bitpay.com/api/rates”;
$json = file_get_contents($url);
$data = json_decode($json, TRUE);
$rateUSD = $data[2][“rate”];
$rateBCH = $data[1][“rate”];
$rateEUR = $data[3][“rate”];
$rateGBP = $data[4][“rate”];
?>
BTC/USD: <?=$rateUSD?>
<br>
BTC/Bitcoin Cash: <?=$rateBCH?>
<br>
BTC/EUR: <?=$rateEUR?>
<br>
BTC/GBP : <?=$rateGBP?>

[/php]

Output

You should see something like this

BTC/USD: 9095.03
BTC/Bitcoin Cash: 6.326933
BTC/EUR: 7610.18
BTC/GBP : 6698.598735

In this example we will use cryptonator's api to show a conversion from bitcoin to USD.

For more information about the api visit – https://www.cryptonator.com/api/. From the website

Cryptonator provides unique volume of cryptocurrency exchange rates data, which is delivered in easy-to-integrate JSON format via simple HTTPS requests. Prices are updated every 30 seconds, covering 300+ cryptocurrencies across 62 exchanges.

You can get a list of cryptocurrencies supported by visiting http://www.cryptonator.com/api/currencies

Lets take a look at an example in PHP

Code

[php]

<?php
$url = “https://www.cryptonator.com/api/ticker/btc-usd”;
$data = json_decode(file_get_contents($url), true);
$ticker = $data[‘ticker'];
$latest_price = $ticker[‘price'];
echo “1 Bitcoin = ” . “$latest_price” . ” US Dollars”;
?>

<html>
<head>
<title>BTC to USd Price Converter</title>
<meta content='10' http-equiv='refresh'/> <!– Reloads Page every 10 seconds –>
</head>

</html>

[/php]

Output

You should see something like this, depending on the current bitcoin price

1 Bitcoin = 9127.96826769 US Dollars

php

Bitpay conversions using PHP

Code

Output

Bitcoin to US Dollar conversion in PHP

Code

Output