I would like to retrive JSON value and display it in wordpress page or widget

I found some articles on net on how to proceed, tried this code:

$url=”https://api.crex24.com/CryptoExchangeService/BotPublic/ReturnTicker?request=[NamePairs=BTC_BZK,BTC_DOGE]“; // path to your JSON file
$data = file_get_contents($url); // put the contents of the file into a variable
$characters = json_decode($data); // decode the JSON feed

echo $characters[0]->PairName;

foreach ($characters as $character) {
echo $character->PairName . ‘
‘;
}