currency converter in php

Way1 :

            $from_Currency = urlencode($from);
            $to_Currency = urlencode($to);
            $encode_amount = $amount;
            $get = file_get_contents("https://finance.google.com/bctzjpnsun/converter?a=$encode_amount&from=$from_Currency&to=$to_Currency");
            $get = explode("<span class=bld>",$get);
            $get = explode("</span>",$get[1]);
            $rate= preg_replace("/[^0-9\.]/", null, $get[0]);
            $converted_amount = $amount*$rate;
            $data = array( 'rate' => $rate, 'converted_amount' =>$converted_amount, 'from_Currency' => strtoupper($from_Currency), 'to_Currency' => strtoupper($to_Currency));
            $res = round( $data );

way 2 :

 $conv_id = "{$from}_{$to}";
             $string = file_get_contents("http://free.currencyconverterapi.com/api/v3/convert?q=$conv_id&compact=ultra");
            $json_a = json_decode($string, true);
            $res = $amount * round($json_a[$conv_id], 4);