vendor/moneyphp/money/src/Currencies/ISOCurrencies.php line 14

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  1. <?php
  3. namespace Money\Currencies;
  5. use Money\Currencies;
  6. use Money\Currency;
  7. use Money\Exception\UnknownCurrencyException;
  9. /**
  10.  * List of supported ISO 4217 currency codes and names.
  11.  *
  12.  * @author Mathias Verraes
  13.  */
  14. final class ISOCurrencies implements Currencies
  15. {
  16.     /**
  17.      * Map of known currencies indexed by code.
  18.      *
  19.      * @var array
  20.      */
  21.     private static $currencies;
  23.     /**
  24.      * {@inheritdoc}
  25.      */
  26.     public function contains(Currency $currency)
  27.     {
  28.         return isset($this->getCurrencies()[$currency->getCode()]);
  29.     }
  31.     /**
  32.      * {@inheritdoc}
  33.      */
  34.     public function subunitFor(Currency $currency)
  35.     {
  36.         if (!$this->contains($currency)) {
  37.             throw new UnknownCurrencyException('Cannot find ISO currency '.$currency->getCode());
  38.         }
  40.         return $this->getCurrencies()[$currency->getCode()]['minorUnit'];
  41.     }
  43.     /**
  44.      * Returns the numeric code for a currency.
  45.      *
  46.      * @param Currency $currency
  47.      *
  48.      * @return int
  49.      *
  50.      * @throws UnknownCurrencyException If currency is not available in the current context
  51.      */
  52.     public function numericCodeFor(Currency $currency)
  53.     {
  54.         if (!$this->contains($currency)) {
  55.             throw new UnknownCurrencyException('Cannot find ISO currency '.$currency->getCode());
  56.         }
  58.         return $this->getCurrencies()[$currency->getCode()]['numericCode'];
  59.     }
  61.     /**
  62.      * @return \Traversable
  63.      */
  64.     public function getIterator()
  65.     {
  66.         return new \ArrayIterator(
  67.             array_map(
  68.                 function ($code) {
  69.                     return new Currency($code);
  70.                 },
  71.                 array_keys($this->getCurrencies())
  72.             )
  73.         );
  74.     }
  76.     /**
  77.      * Returns a map of known currencies indexed by code.
  78.      *
  79.      * @return array
  80.      */
  81.     private function getCurrencies()
  82.     {
  83.         if (null === self::$currencies) {
  84.             self::$currencies = $this->loadCurrencies();
  85.         }
  87.         return self::$currencies;
  88.     }
  90.     /**
  91.      * @return array
  92.      */
  93.     private function loadCurrencies()
  94.     {
  95.         $file = __DIR__.'/../../resources/currency.php';
  97.         if (file_exists($file)) {
  98.             return require $file;
  99.         }
  101.         throw new \RuntimeException('Failed to load currency ISO codes.');
  102.     }
  103. }