static function CurrencyExchanger::loadMultiple in Currency 7.2

Implements CurrencyExchangerInterface::loadMultiple().

Overrides CurrencyExchangerInterface::loadMultiple

3 calls to CurrencyExchanger::loadMultiple()

CurrencyExchangerWebTestCase::assertCurrencyExchangeRates in currency/tests/CurrencyConverterWebTestCase.test

Asserts that exchange rates can be retrieved.

CurrencyExchangerWebTestCase::assertIdenticalCurrencyExchangeRates in currency/tests/CurrencyConverterWebTestCase.test

Assert sthat exchange rates for identical currencies can be retrieved.

currency_exchange_rate_db_table_refresh in currency_exchange_rate_db_table/currency_exchange_rate_db_table.module

Updates the exchange rates stored in the database table.

File

currency/includes/CurrencyExchanger.inc, line 82

Contains class CurrencyExchanger.

Class

CurrencyExchanger

A currency exchanger that uses other available currency exchangers to load exchange rates.

Code

static function loadMultiple(array $currency_codes) {
  $rates = array();

  // Set rates for identical source and destination currencies.
  foreach ($currency_codes as $currency_code_from => $currency_codes_to) {
    foreach ($currency_codes_to as $index => $currency_code_to) {
      if ($currency_code_from == $currency_code_to) {
        $rates[$currency_code_from][$currency_code_to] = 1;
        unset($currency_codes[$currency_code_from][$index]);
      }
    }
  }
  foreach (self::loadExchangers() as $exchanger) {
    foreach ($exchanger::loadMultiple($currency_codes) as $currency_code_from => $currency_codes_to) {
      foreach ($currency_codes_to as $currency_code_to => $rate) {
        $rates[$currency_code_from][$currency_code_to] = $rate;

        // If we found a rate, prevent it from being looked up by the next exchanger.
        if ($rate) {
          $index = array_search($currency_code_to, $currency_codes[$currency_code_from]);
          unset($currency_codes[$currency_code_from][$index]);
        }
      }
    }
  }
  return $rates;
}