Are there any reputable sources or APIs that provide exchange rate data for use in PHP applications?

One reputable source for exchange rate data that can be used in PHP applications is the Open Exchange Rates API. This API provides real-time and historical exchange rate data for over 170 currencies. By integrating this API into a PHP application, developers can easily retrieve accurate exchange rate information for their needs. 

// Set your API key from Open Exchange Rates
$api_key = 'YOUR_API_KEY';

// Set the base currency and target currency
$base_currency = 'USD';
$target_currency = 'EUR';

// Make a request to the Open Exchange Rates API
$response = file_get_contents("https://open.er/api/latest.json?app_id=$api_key&base=$base_currency&symbols=$target_currency");

// Decode the JSON response
$data = json_decode($response, true);

// Get the exchange rate for the target currency
$exchange_rate = $data['rates'][$target_currency];

// Output the exchange rate
echo "1 $base_currency = $exchange_rate $target_currency";

Keywords

exchange rate data APIs PHP applications reputable sources libraries

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