конвертер валюты

вывод на сайте выбора валюты

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<? if (!$select_cy):?>
<form method="post">
<select id="select_cy" name="select_cy" onchange="this.form.submit()">
<option value="RUB">RUB</option>
<option <?if($_SESSION['select_id'] == "USD"){echo 'selected';}?> value="USD">USD</option>
<option <?if($_SESSION['select_id'] == "EUR"){echo 'selected';}?> value="EUR">EUR</option>
<option <?if($_SESSION['select_id'] == "UAH"){echo 'selected';}?> value="UAH">UAH</option>
<option <?if($_SESSION['select_id'] == "BYN"){echo 'selected';}?> value="BYN">BYN</option>
<option <?if($_SESSION['select_id'] == "KGS"){echo 'selected';}?> value="KGS">KGS</option>
</select>
</form>
<? endif; ?>

вывод валюты

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<? if( $price["CURRENCY"] === "RUB" ){
$RUB_VAL = $price['BASE_PRICE']; //сумма в USD
$USD_VAL = CCurrencyRates::ConvertCurrency($RUB_VAL, "RUB", "USD");
$EUR_VAL = CCurrencyRates::ConvertCurrency($RUB_VAL, "RUB", "EUR");
$UAH_VAL = CCurrencyRates::ConvertCurrency($RUB_VAL, "RUB", "UAH");
$BYN_VAL = CCurrencyRates::ConvertCurrency($RUB_VAL, "RUB", "BYN");
$KGS_VAL = CCurrencyRates::ConvertCurrency($RUB_VAL, "RUB", "KGS");
}
?>
 
<?if($_SESSION['select_id'] == "RUB"):?>
<strong><?=CurrencyFormat( $RUB_VAL, ".")?> RUB</strong>
<? endif;?>
 
<?if($_SESSION['select_id'] == "USD"):?>
<strong><?=CurrencyFormat( $USD_VAL, ".")?> USD</strong>
<? endif;?>
 
<?if($_SESSION['select_id'] == "EUR"):?>
<strong><?=CurrencyFormat( $EUR_VAL, ".")?> EUR</strong>
<? endif;?>
 
<?if($_SESSION['select_id'] == "UAH"):?>
<strong><?=CurrencyFormat( $EUR_VAL, ".")?> UAH</strong>
<? endif;?>
 
<?if($_SESSION['select_id'] == "BYN"):?>
<strong><?=CurrencyFormat( $EUR_VAL, ".")?> BYN</strong>
<? endif;?>
 
<?if($_SESSION['select_id'] == "KGS"):?>
<strong><?=CurrencyFormat( $EUR_VAL, ".")?> KGS</strong>
<? endif;?>