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PHP Currency Converter

PHP, Programming

Here is another PHP code snippet from my library. This PHP function allows you to calculate exchange amounts between 49 countries and 33 currencies.

Function is based on the live conversion reference rates provided by European Central Bank.

Usage

  • First 3 parameters are required. First one is the origin currency and the second one is target currency.
  • First 2 parameters should be the same type. If you are doing a county code based conversion both must be country codes. If you are doing currency code based conversion, both should be currency codes.
  • 3rd parameter is the amount you want to be converted. Should be decimal digits without any currency signs or codes attached to it.
  • 4th parameter is optional and set as true by default. When enabled function will prepend or append the currency sign (or code) to the output amount. You may want to turn that off if you will use the returned amount in a calculation.
  • 5th and the last parameter is calculation precision. Controls the number of digits after the decimal point. Default is 5.

Usage Samples

  • currency_convert(“EUR”,”USD”,100)
  • currency_convert(“FR”,”GB”,98);
  • currency_convert(“AUD”,”CNY”,145,false,8);
  • currency_convert(“GR”,”DK”,3500,true,2);

Download

  • Download PHP code snippet
  • Code is PHP5 compatible but it should also work on PHP4 (Untested)

License

This code is free to use, distribute, modify and study. When referencing please link back to this website / post in any way e.g. direct link, credits etc. If you find this useful, please leave a comment and share using the buttons below!

9 Responses to PHP Currency Converter

  • Mastan
    4 / 27 / 2018

    If possible, Can you please provide for all asian countries like dubai, malaysia, srilanka, pakisthan etc

    Mastan 4 / 27 / 2018
  • soap
    4 / 12 / 2017

    Hello! Can somebody “update” this code? I mean comptatible with PHP 7.0. For example function “ereg” is already deprecated and it gives me some error!

    soap 4 / 12 / 2017
  • Tarikul Islam
    11 / 25 / 2015

    Hello,

    Thank You for this nice script.This is awesome. You have made my day.

    Regards,
    Rumi

    Tarikul Islam 11 / 25 / 2015
  • Woody
    5 / 8 / 2014

    Still useful to this day :) Cheers Pixel Envision :)

    Woody 5 / 8 / 2014
  • Khan
    3 / 4 / 2012

    Hi Guys,

    I cannot getit to work. My PHP knowledge is not that good but please support.

    I have one price shown with PHP code:

    formatPrice( floatval($this->row->price) , JText::_(‘Consult us’) )

    I need to show this price in USD, EUR, and TRY. Can anyone help me with this?

    Appreciate!

    Khan

    Khan 3 / 4 / 2012
    • Admin
      3 / 6 / 2012

      Hi Khan,

      Based on your post, I assume you can do something like that…

      $converted=currency_convert(“CURRENCYOFTHEORIGINALAMOUNTHERE”,”USD”,$this->row->price,false);
      formatPrice( floatval($converted) , JText::_(‘Consult us’) );

      Admin 3 / 6 / 2012
  • s@ch@x
    2 / 6 / 2012

    Hallo :)
    I just wanted to thank you for your snippet. really useful indeed :)
    Since I had to call your function several times on a webpage, I thought that maybe I could call only once the BCE xml. So I slightly changed your snippet as follows, and I hope it can be useful to you :) Thank you very much :)
    s@ch@x

    /* what I did is to take out $XMLContent and added a $ratesRequested. Both variables where latere referenced into your function with the “global” keyword. that’s it. this way the xml is requested only once. In my case was a speedup in performance. Once the site is online, I will add any credit you prefer to it. thank you ;) */

    /* the code */

    “USD”,”BE”=>”EUR”,”ES”=>”EUR”,”LU”=>”EUR”,”PT”=>”EUR”,”DE”=>”EUR”,”FR”=>”EUR”,”MT”=>”EUR”,”SI”=>”EUR”,”IE”=>”EUR”,”IT”=>”EUR”,”NL”=>”EUR”,”SK”=>”EUR”,”GR”=>”EUR”,”CY”=>”EUR”,”AT”=>”EUR”,”FI”=>”EUR”,”JP”=>”JPY”,”BG”=>”BGN”,”CZ”=>”CZK”,”DK”=>”DKK”,”EE”=>”EEK”,”GB”=>”GBP”,”HU”=>”HUF”,”LT”=>”LTL”,”LV”=>”LVL”,”PL”=>”PLN”,”RO”=>”RON”,”SE”=>”SEK”,”CH”=>”CHF”,”NO”=>”NOK”,”HR”=>”HRK”,”RU”=>”RUB”,”TR”=>”TRY”,”AU”=>”AUD”,”BR”=>”BRL”,”CA”=>”CAD”,”CN”=>”CNY”,”HK”=>”HKD”,”ID”=>”IDR”,”IN”=>”INR”,”KR”=>”KRW”,”MX”=>”MXN”,”MY”=>”MYR”,”NZ”=>”NZD”,”PH”=>”PHP”,”SG”=>”SGD”,”TH”=>”THB”,”ZA”=>”ZAR”);

    if (strlen($from)==2 && strlen($to)==2) {//Operate using country code
    if(isset($CURRENCY[$from])) {$in=$CURRENCY[$from];}
    if(isset($CURRENCY[$to])) {$out=$CURRENCY[$to];}
    } elseif (strlen($from)==3 && strlen($to)==3) {//Operate using currency code
    if(in_array($from,$CURRENCY)) {$in=$from;}
    if(in_array($to,$CURRENCY)) {$out=$to;}
    } else {
    echo “Error: You should either use 2 digit country codes or 3 digit currency codes!”;
    }

    if ($in && $out) {//Both currencies available, continue
    if ( !$ratesRequested ) // we check if the XML was parsed, in case it is, we skip this step – s@ch@x
    {
    //Load live conversion rates and set as an array
    $XMLContent= file(“http://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml”);
    if(is_array($XMLContent)) {
    foreach ($XMLContent as $line) {
    if (ereg(“currency='([[:alpha:]]+)'”,$line,$currencyCode)) {
    if (ereg(“rate='([[:graph:]]+)'”,$line,$rate)) {
    $RATES[$currencyCode[1]]=$rate[1];
    }
    }
    }
    }
    $ratesRequested = true; // in case we are parsing the XML from BCE, we set this to true, so that we wont parse it again – s@ch@x
    }
    if(is_array($RATES))
    {
    $RATES[“EUR”]=1; //Add EUR reference to array
    if ($in!=”EUR”) {//Normalize rate to given input
    $BASE=$RATES[$in];
    foreach ($RATES as $code => $rate)
    {
    $RATES[$code]=round($rate/$BASE,$sensitivity);
    }
    }

    //Prepend or append the currency information
    if ($sign)
    {
    if ($out==”USD”) {echo “$ “;}
    elseif ($out==”EUR”) {echo “€ “;}
    elseif ($out==”GBP”) {echo “£ “;}
    elseif ($out==”JPY”) {echo “¥ “;}
    else {$append=$out;}
    }

    echo “” . round($amount*$RATES[$out],$sensitivity) . ““;//Output the converted amount

    if ($append) {echo ” “.$append;}

    } else {
    echo “Errore di caricamento: ricarica la pagina”;
    }

    } else {
    echo “Error: Either one or both of given currencies are not available for conversion!”;
    }
    }

    //echo currency_convert(“EUR”,”USD”,1);
    ?>

    s@ch@x 2 / 6 / 2012
    • Admin
      2 / 6 / 2012

      Hi s@ch@x,

      You’re welcome, I’m just glad it’s ben useful for you! And thanks for sharing your updated code. :)

      Admin 2 / 6 / 2012