Max Payne

cd /etc/resolvconf/resolv.conf.d
sudo cp -p head head.orig  #backup
sudo nano head

nameserver 8.8.8.8
nameserver 8.8.4.4

ctrl+x

json_decode(file_get_contents("https://blockchain.info/ru/charts/market-price?showDataPoints=false&timespan=&show_header=true&daysAverageString=1&scale=0&format=json&address="),1);

var_dump(json_decode(file_get_contents("https://blockchain.info/ru/charts/market-price?showDataPoints=false&timespan=&show_header=true&daysAverageString=1&scale=0&format=json&address="),1));

$url = 'http://example.com/restapi/post';
$params = array(
    '$p1' => $_POST['txt1'], 
    '$p2' => $_POST['txt2'],
);
$result = file_get_contents($url, false, stream_context_create(array(
    'http' => array(
        'method'  => 'POST',
        'header'  => 'Content-type: application/x-www-form-urlencoded',
        'content' => http_build_query($params)
    )
)));

echo $result;