Embedded Currency Conversion

Alkazar · #1 08-24-2007, 06:02 AM

Can anyone please advise if it is possible to embed some sort of code into a non-dynamic site (XHTML and CSS) to enable an amount in US $ to be automatically displayed in another currency alongside the dollar price?

I've seen sites that offer free online exchange rate calculators (eg. XE.com - The World's Favorite Currency and Foreign Exchange Site) that can be embedded on my site but the user needs to enter amounts and currencies etc., which I don't want.

I just want the US dollar price on my HTML page to be used as the input amount, the output currency would be predetermined (i.e. not user selectable) and then a field to display the returned converted amount.

Is this possible without setting up a full database driven site as I'm only just getting my head around CSS & HTML and have no PHP experience other than recently helping to set up a Zen-Cart site for a relative. I noticed that Zen-Cart uses some sort of open-source online exchange rate service and it got me wondering.

Many thanks in advance.

shiva · #2 08-27-2007, 06:57 AM

Hi Alkazar,

I don't think you need a fully database driven site to convert currency and show it in your HTML site..

As seen in some sites, they just spider through other sites which have the currency conversion modules and get the conversion details from them...

So what you need a PHP Page to do the spidering or grabbing functionality...

Attached is a PHP Script which will take the INPUT & OUTPUT Currencies & the Input Currency Value and get the converted output currency Value from finance.yahoo.com

PHP Code:

      function get_conversion($cur_from,$cur_to,$val){

 
            if(strlen($cur_from)==0){

                $cur_from = "USD";

            }

            if(strlen($cur_to)==0){

                $cur_from = "PHP";

            }

            $host="finance.yahoo.com";

            $fp = @fsockopen($host, 80, $errno, $errstr, 30);

            if (!$fp)

            {

                $errorstr="$errstr ($errno)<br />\n";

                return false;

            }

            else

            {

                $file="/d/quotes.csv";

                $str = "?s=".$cur_from.$cur_to."=X&f=sl1d1t1ba&e=.csv";

                $out = "GET ".$file.$str." HTTP/1.0\r\n";

                $out .= "Host: www.yahoo.com\r\n";

                $out .= "Connection: Close\r\n\r\n";

                @fputs($fp, $out);

                while (!@feof($fp))

                {

                    $data .= @fgets($fp, 128);

                }

                @fclose($fp);

                @preg_match("/^(.*?)\r?\n\r?\n(.*)/s", $data, $match);

                $data =$match[2];

                $search = array ("'<script[^>]*?>.*?</script>'si","'<[\/\!]*?[^<>]*?>'si","'([\r\n])[\s]+'","'&(quot|#34);'i","'&(amp|#38);'i","'&(lt|#60);'i","'&(gt|#62);'i","'&(nbsp|#160);'i","'&(iexcl|#161);'i","'&(cent|#162);'i","'&(pound|#163);'i","'&(copy|#169);'i","'&#(\d+);'e");

                $replace = array ("","","\\1","\"","&","<",">"," ",chr(161),chr(162),chr(163),chr(169),"chr(\\1)");

                $data = @preg_replace($search, $replace, $data);

                $result = split(",",$data);

                return ($result[1] * $val);

            }//else

    }//end get_conversion

Hope this helps!!!

Thanks
Shiva...

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