How to Currency Converter using PHP and Google API

admin | Posted on May 9, 2021 |

Google is providing free of cost Currency Converter API to convert one currency into another currency type. Google Currency Converter API can implement any programming language. I am using PHP to create a currency converter application to convert real-time currency value from one currency type to another currency type.

HTML Code

<html>
    <head>
    </head>
    <body>
        <form method="post"action="">
                <input type="text" name="amount" placeholder="Enter Amount">
                <select name="convert_from">
                    <option  value="INR">Indian Rupee</option>
                    <option  value="USD">US Dollar</option>
                    <option  value="SGD">Singapore Dollar</option>
                    <option  value="EUR">Euro</option>
                    <option  value="AED">UAE Dirham</option>
                </select>
                <select name="convert_to">
                    <option  value="INR">Indian Rupee</option>
                    <option  value="USD">US Dollar</option>
                    <option  value="SGD">Singapore Dollar</option>
                    <option  value="EUR">Euro</option>
                    <option  value="AED">UAE Dirham</option>
                </select>
                <br>
                <input type="submit" name="convert_currency" value="Convert Currency">
        </form>
    </body>
</html>

PHP Code

<?php
function currency_converter($from,$to,$amount){
	$data = file_get_contents("https://www.google.com/finance/converter?a=$amount&from=$from&to=$to");
	preg_match("/<span class=bld>(.*)<\/span>/",$data, $converted);
	$converted = preg_replace("/[^0-9.]/", "", $converted[1]);
	return number_format(round($converted, 3),2);
}


if(isset($_POST['convert_currency']))
{
    $amount=$_POST['amount'];
    $from=$_POST['convert_from'];
    $to=$_POST['convert_to'];
    $rawData = currency_converter($from,$to,$amount);
    echo $rawData;
}
?>

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