Get value from an array from a URL

Question

I have a url, http://btcrate.com/convert?from=btc&to=usd&exch=mtgox&conv=xe&amount=0.01, which outputs {"converted": "1.300000300"}. I want to get the value of converted into a PHP value, so $usd = 1.300000300;.

I have tried the following, but it just outputs the whole string, although I just want the value of converted.

file_get_contents("http://btcrate.com/convert?from=btc&to=usd&exch=mtgox&conv=xe&amount=0.01");

What have you tried · Accepted Answer · 2013-04-28 05:30:27Z

2

The data being returned is in JSON format, so you can decode the JSON and then simply retrieve the value of converted

$data = file_get_contents("http://btcrate.com/convert?from=btc&to=usd&exch=mtgox&conv=xe&amount=0.01");

$obj = json_decode($data );
$converted = $obj->{'converted'};

echo $converted;

Learn more about using JSON in PHP here

edited Apr 28, 2013 at 5:30

answered Apr 28, 2013 at 5:20

What have you tried

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ljubiccica · Accepted Answer · 2013-04-28 05:29:08Z

0

Another possibility is to use arrays:

$string = file_get_contents("http://btcrate.com/convert?from=btc&to=usd&exch=mtgox&conv=xe&amount=0.01");

$result = json_decode($string, true);
$converted = $result['converted'];

echo $converted;

answered Apr 28, 2013 at 5:29

ljubiccica

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