What are some best practices for handling currency conversion in PHP?

Currency conversion in PHP can be handled by using external APIs or libraries that provide up-to-date exchange rates. One popular option is to use the `exchangeratesapi.io` API to fetch exchange rates and perform the conversion calculations in your PHP code. 

// Function to convert currency using exchangeratesapi.io API
function convertCurrency($amount, $from, $to) {
    $apiKey = 'YOUR_API_KEY';
    $url = "https://api.exchangeratesapi.io/latest?base=$from&symbols=$to&access_key=$apiKey";
    
    $response = file_get_contents($url);
    $data = json_decode($response, true);
    
    $exchangeRate = $data['rates'][$to];
    $convertedAmount = $amount * $exchangeRate;
    
    return $convertedAmount;
}

// Example usage
$amount = 100;
$fromCurrency = 'USD';
$toCurrency = 'EUR';

$convertedAmount = convertCurrency($amount, $fromCurrency, $toCurrency);
echo "$amount $fromCurrency is equal to $convertedAmount $toCurrency";

Keywords

currency conversion PHP exchange rates money_format number_format

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