PHP Bitcoin to Ukrainian Hrivna price ticker

Question

I am trying to create a real-time ticker of the price of bitcoin from the BTC-E.com exchange in Ukrainian currency. The end result is to put the price on my simple HTML website. The exchange does not provide the price in hrivna (UAH), so I have to convert from BTC to USD to UAH. So far I have managed to put the price in USD, using the API provided by BTC-E

https://btc-e.com/api/2/btc_usd/ticker

The PHP file I have created:-

<?php header('Cache-Control: no-cache, no-store, must-revalidate'); // HTTP 1.1. header('Pragma: no-cache'); // HTTP 1.0. header('Expires: 0'); // Proxies. $data = file_get_contents("https://btc-e.com/api/2/btc_usd/ticker"); $data = json_decode($data, true); $spot_last = $data['ticker']['last']; echo $spot_last; ?>

This is the code I put in index.html:-

<script> var auto_refresh = setInterval( function() {$('.btce_price').load('ticker.php');}, 1000); </script>

In order to have USD to UAH conversion, I would like to use the commercial rate from one of the banks.

https://api.privatbank.ua/p24api/pubinfo?exchange&coursid=5

which returns the following

<exchangerates> <row> <exchangerate ccy="RUR" base_ccy="UAH" buy="0.25000" sale="0.28000"/> </row> <row> <exchangerate ccy="EUR" base_ccy="UAH" buy="13.30000" sale="14.30000"/> </row> <row> <exchangerate ccy="USD" base_ccy="UAH" buy="9.60000" sale="10.10000"/> </row> </exchangerates>

so i have the other php file to output the buy rate that i need

$xml = simplexml_load_file("https://api.privatbank.ua/p24api/pubinfo?exchange&coursid=5"); $m = $xml->xpath('//exchangerate[@ccy="USD"]'); $exrate = (string)$m[0]['buy']; echo $exrate;

Now back to the question. How divide the output of the first file by the second so that it then displays the result in my index.html ?

Answer 1

I would suggest, that instead of dividing the values - I would multiply them.

Actually: 1 BTC = 633 USD and 633 USD =~ 6000 UAH. So i would calculate: $uah = $spot_last * $exrate;

Example
 

<?php header('Cache-Control: no-cache, no-store, must-revalidate'); // HTTP 1.1. header('Pragma: no-cache'); // HTTP 1.0. header('Expires: 0'); // Proxies. // get BTC $data = file_get_contents("https://btc-e.com/api/2/btc_usd/ticker"); $data = json_decode($data, true); $spot_last = $data['ticker']['last']; echo '1 BTC is worth ' . $spot_last . ' USD. <br>'; // get CURRENCIES $xml = simplexml_load_file("https://api.privatbank.ua/p24api/pubinfo?exchange&coursid=5"); $m = $xml->xpath('//exchangerate[@ccy="USD"]'); $exrate = (string)$m[0]['buy']; echo '1 USD is worth '. $exrate .' UAH. <br>'; $uah = $spot_last * $exrate; echo 'Result: 1 BTC ~ ' . $uah . ' UAH. <br>';

For usage as ticker, delete all echos statements, they are just for demonstration and insert just echo $uah;

Output
 

1 BTC is worth 624.928 USD. 
1 USD is worth 9.60000 UAH. 
1 BTC ~ 5999.3088 UAH.