Please check below currency change example.
function oneUSDTo($amount, $toCurrency)
{
$currencyUrl = $amount."usd+to+$toCurrency";
$url = "https://www.google.com/search?q=".$currencyUrl;
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,$url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$result = curl_exec($ch);
$data = explode("$amount US Dollar = ",$result);
return (float) substr($data[1],0,10);
}
//Usage: oneUSDTo("type currency code here");
echo oneUSDTo("5","EUR");