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[Slava]

Zum Umrechnen von Geld Wechselkurs an Hand von aktuelen
European Central Bank Daten.

Php:

<?php error_reporting(E_ALL); /*Class Ecb * Zum Umrechnen von Geld  Wechselkurs an Hand von aktuelen * European Central Bank Daten. * die Werte werden für eine Stunde gecacht um der Zugriff * auf E.C.B Daten sparsam zu betreiben. * @license Free for non-commercial use * @autor Slava bituniverse.com * @example See below /sieh unten **/ class Ecb{  #Member  //url from xml-data ECB  private $currencie_url="http://www.ecb.int/stats/eurofxref/eurofxref-daily.xml";  private $cur_array=array();  private static $cur_descript=array('EUR'=>'Euro','USD'=>'US dollar',               'JPY'=>'Japanese yen','BGN'=>'Bulgarian lev',               'CYP'=>'Cyprus pound','CZK'=>'Czech koruna',               'DKK'=>'Danish krone','EEK'=>'Estonian kroon',               'GBP'=>'Pound sterling','HUF'=>'Hungarian forint',               'LTL'=>'Lithuanian litas','LVL'=>'Latvian lats',               'MTL'=>'Maltese lira','PLN'=>'Polish zloty',               'RON'=>'New Romanian leu 2','SEK'=>'Swedish krona',               'SKK'=>'Slovak koruna','CHF'=>'Swiss franc',               'ISK'=>'Icelandic krona','NOK'=>'Norwegian krone',               'HRK'=>'Croatian kuna','RUB'=>'Russian rouble',               'TRY'=>'New Turkish lira 3','AUD'=>'Australian dollar',               'CAD'=>'Canadian dollar','CNY'=>'Chinese yuan renminbi',               'HKD'=>'Hong Kong dollar','IDR'=>'Indonesian rupiah',               'KRW'=>'South Korean won','MYR'=>'Malaysian ringgit',               'NZD'=>'New Zealand dollar','PHP'=>'Philippine peso',               'SGD'=>'Singapore dollar','THB'=>'Thai baht',               'ZAR'=>'South African rand' );        protected $cach_file_name= 'currency.txt';//standard in gleichem ordner.  //chach time  protected $cach_time=3600;//eine Stunde cachen.  # /Member------------------------      /* Construct, Konstruktor */   public function __construct()  {    $this->cach_file_name=dirname( __FILE__ ).DIRECTORY_SEPARATOR.$this->cach_file_name;    if(!file_exists($this->cach_file_name) ||       (file_exists($this->cach_file_name) && (filemtime($this->cach_file_name)+$this->cach_time)<time() ) )    {      $this->init_currencie();    }    else    {     //cach    $this->cur_array=unserialize(file_get_contents($this->cach_file_name));          }    $this->cur_array['EUR']=1.0;  }  #end construct----------------    #public Methods    /** !!!!!  * function calculate 'calculate $amount from, to' ,berchnet wechselkurs.  * @param $amoung: float, Geldbetrag  * @param $curr: string, Shortcut From , Kürzel für Geld, von dem gewechselt wird.  * @param $curr_to: string, Shortcut TO, Kürzel für Geld, in das gewechselt wird.  * $curr and $curr_to use keys from $this->cur_descript  * @return float  * @example echo '10 US Dolar='.$instance_of_Ecb->calculate(10,'USD','GBP').' Pound sterling';  **/  public function calculate($amount,$curr,$curr_to)  {    return $this->getRate($curr_to)*$amount/$this->getRate($curr);  }#end calculate    /** getDescription  * @access public, @static  * @param $val, optional use keys from $this->cur_descript, benutze keys aus $this->cur_descript  * @return float or mixed, if empty $val array(USD'=>'US dollar',....), else description on key $val.  * liefert bei eingesetzter $val eine description zu dem passendem Key in $this->cur_descript, oder der  * ganzer Inhalt von $this->cur_descript, wenn kein parameter übergeben wurde.  **/  public static function  getDescription($val=false)  {    return $val?(self::$cur_descript[$val]) : (self::$cur_descript);  }#end getDescription    /**  * function getRate, rate currencie to EUR  * @acces public  * @param $currencie_short: string, GBR or USD ....  * @return :float  **/  public function getRate($currencie_short)  {    return isset($this->cur_array[$currencie_short])?$this->cur_array[$currencie_short]:false;  }#end getRate    /*  * @return :array , array('USD'=>1.404,.....)  **/  public function getCurrencieAll()  {    return $this->cur_array;  }#end getCurrencieAll     #end public Methods---------   //private Methods  private function init_currencie()  {    preg_match_all("#currency\='(.{3})'\s+rate\='([^']+)'#",file_get_contents($this->currencie_url),$array);    if(count($array>2))    {     $this->cur_array=array_combine($array[1],$array[2]);   file_put_contents($this->cach_file_name,serialize($this->cur_array));    }     else die('Bug in '.__FILE__.' Line:'.__LINE__);  }   } ############## End Ecb####################         //example //require_once 'class.ecb.php'; //new Instance $geld=new Ecb; echo '<html><head><title>test</title></head><body>'; #simple example echo 'für 10 '.Ecb::getDescription('USD').' bekommen Sie '.      round($geld->calculate(10,'USD','GBP'),2).' '.Ecb::getDescription('GBP').'<br />';             ####formular### echo '<form method="post">'; //betrag echo 'Betrag: <input type="text" name="betrag" value="1.0" /><br />'; //selects $sel='<select name="%s">'; foreach(Ecb::getDescription() as $k=>$v) {   $sel.="<option value=\"{$k}\">{$k} : {$v}</option>"; } $sel.='</select>'; printf('Von:'.$sel.' In:'.$sel,'von','in'); echo '<br /><input type="submit" /></form>';   if(isset($_POST['von'],$_POST['in'],$_POST['betrag']) && is_numeric($_POST['betrag'])) { echo '<h2>für '.$_POST['betrag'].' '.Ecb::getDescription($_POST['von']).' bekommen Sie '.      round($geld->calculate($_POST['betrag'],$_POST['von'],$_POST['in']),2).' '.    Ecb::getDescription($_POST['in']).'</h2>'; }   ###########   #teble with rate echo '<h2>Aktuele Tabelle</h2><table border="1"><tr><th>Kuerzel</th><th>Name</th><th>Euro rate</th></tr>'; foreach($geld->getCurrencieAll() as $geldk=>$value) {   echo "<tr><td>{$geldk}</td><td>".Ecb::getDescription($geldk)."</td><td>{$value}</td></tr>"; } echo '</table>';    echo '</body></html>';