symfony · Crovitche-1623 · Aug 15, 2025 · Aug 15, 2025 · Aug 15, 2025 · Aug 15, 2025
diff --git a/src/Symfony/Component/Intl/CHANGELOG.md b/src/Symfony/Component/Intl/CHANGELOG.md
@@ -5,6 +5,7 @@ CHANGELOG
 ---
 
  * Allow Kosovo as a component region, controlled by the `SYMFONY_INTL_WITH_USER_ASSIGNED` env var
+ * Add `isActive()` to check if a given currency is available in at least 1 region
 
 7.1
 ---

diff --git a/src/Symfony/Component/Intl/Currencies.php b/src/Symfony/Component/Intl/Currencies.php
@@ -139,6 +139,156 @@ public static function forNumericCode(int $numericCode): array
         return self::readEntry(['NumericToAlpha3', (string) $numericCode], 'meta');
     }
 
+    /**
+     * @param non-empty-string $country e.g. 'FR'
+     * @param ?bool $legalTender if the currency must be a legal tender. Using null do not filter anything
+     * @param bool $activeOnly exclude currencies that are not active on the given $date in countries
+     * @param string $date The date string on which the check will be performed
+     *
+     * @throws MissingResourceException if the given $country does not exist
+     *
+     * @return array<non-empty-string, array{from?: non-empty-string, to?: non-empty-string, tender?: bool}>
+     */
+    public static function forCountry(
+        string $country,
+        ?bool $legalTender = true,
+        bool $activeOnly = true,
+        string $date = 'today',
+    ): array {
+        $currenciesMetadata = self::readEntry(['Map', $country], 'meta');
+
+        $currencies = [];
+
+        foreach ($currenciesMetadata as $currency => $currencyMetadata) {
+            if (null !== $legalTender && $legalTender !== self::isLegalTender($currencyMetadata)) {
+                continue;
+            }
+
+            if (!$activeOnly) {
+                $currencies[$currency] = $currencyMetadata;
+
+                continue;
+            }
+
+            if (!self::isActive($country, $currency, $currencyMetadata, $date)) {
+                continue;
+            }
+
+            $currencies[$currency] = $currencyMetadata;
+        }
+
+        return $currencies;
+    }
+
+    /**
+     * @param non-empty-string $country e.g. 'FR'
+     * @param non-empty-string $currency e.g. 'USD'
+     * @param string $date The date that will be checked when $activeOnly is set to true
+     */
+    public static function existsInCountry(
+        string $country,
+        string $currency,
+        bool $activeOnly = true,
+        string $date = 'today',
+    ): bool {
+        try {
+            $currencyMetadata = self::readEntry(['Map', $country, $currency], 'meta');
+        } catch (MissingResourceException) {
+            return false;
+        }
+
+        if (!$activeOnly) {
+            return true;
+        }
+
+        return self::isActive($country, $currency, $currencyMetadata, $date);
+    }
+
+    /**
+     * @param array{tender?: bool} $currencyMetadata
+     */
+    private static function isLegalTender(array $currencyMetadata): bool
+    {
+        return !\array_key_exists('tender', $currencyMetadata) || false !== $currencyMetadata['tender'];
+    }
+
+    /**
+     * @param non-empty-string $country  e.g. 'FR'
+     * @param non-empty-string $currency  e.g. 'USD'
+     * @param array{from?: non-empty-string, to?: non-empty-string} $currencyMetadata
+     * @param string $date The date on which the check will be performed
+     */
+    private static function isActive(string $country, string $currency, array $currencyMetadata, string $date = 'today'): bool
+    {
+        if (!\array_key_exists('from', $currencyMetadata)) {
+            // Note: currencies that are not legal tender don't have often validity dates.
+            throw new \RuntimeException("Cannot check whether the currency $currency is active or not because they are no validity dates available.");
+        }
+
+        $from = \DateTimeImmutable::createFromFormat('Y-m-d', $currencyMetadata['from']);
+
+        if (!$from) {
+            throw new \RuntimeException("Unable to parse the `from` date for currency $currency in country $country.");
+        }
+
+        if (\array_key_exists('to', $currencyMetadata)) {
+            $to = \DateTimeImmutable::createFromFormat('Y-m-d', $currencyMetadata['to']);
+
+            if (!$to) {
+                throw new \RuntimeException("Unable to parse the `to` date for currency $currency in country $country.");
+            }
+        } else {
+            $to = null;
+        }
+
+        try {
+            $date = new \DateTimeImmutable($date);
+        } catch (\DateMalformedStringException $exception) {
+            throw new \InvalidArgumentException("Invalid date provided: $date.", previous: $exception);
+        }
+
+        return $from <= $date && (null === $to || $to >= $date);
+    }
+
+    /**
+     * @param non-empty-string $currency e.g. 'USD'
+     * @param ?bool $legalTender if the currency must be a legal tender. Using null do not filter anything
+     * @param bool $activeOnly exclude currencies that are not active on the given $date in countries
+     * @param string $date the date on which the check will be performed if $activeOnly is set to true
+     */
+    public static function existsInAtLeastOneCountry(
+        string $currency,
+        ?bool $legalTender = true,
+        bool $activeOnly = true,
+        string $date = 'today',
+    ): bool {
+        $countries = self::readEntry(['Map'], 'meta');
+
+        foreach ($countries as $countryCode => $country) {
+            foreach ($country as $currencyCode => $currencyMetadata) {
+                if ($currencyCode !== $currency) {
+                    continue;
+                }
+
+                if (null !== $legalTender && $legalTender !== self::isLegalTender($currencyMetadata)) {
+                    continue;
+                }
+
+                if (!$activeOnly) {
+                    return true;
+                }
+
+                if (!self::isActive($countryCode, $currencyCode, $currencyMetadata, $date)) {
+                    continue;
+                }
+
+                return true;
+            }
+        }
+
+        return false;
+    }
+
     protected static function getPath(): string
     {
         return Intl::getDataDirectory().'/'.Intl::CURRENCY_DIR;

diff --git a/src/Symfony/Component/Intl/Data/Generator/CurrencyDataGenerator.php b/src/Symfony/Component/Intl/Data/Generator/CurrencyDataGenerator.php
@@ -48,6 +48,54 @@ class CurrencyDataGenerator extends AbstractDataGenerator
      */
     private array $currencyCodes = [];
 
+    /**
+     * Decode ICU "date pair" into a DateTimeImmutable (UTC).
+     *
+     * ICU stores UDate = milliseconds since 1970-01-01T00:00:00Z in a signed 64-bit.
+     *
+     * @param array{0: int, 1: int} $pair
+     *
+     * @return non-empty-string
+     */
+    private static function icuPairToDate(array $pair): string
+    {
+        [$highBits32, $lowBits32] = $pair;
+
+        // Recompose a 64-bit unsigned integer from two 32-bit chunks.
+        $unsigned64 = ((($highBits32 & 0xFFFFFFFF) << 32) | ($lowBits32 & 0xFFFFFFFF));
+
+        // Convert to signed 64-bit (two's complement) if sign bit is set.
+        if ($unsigned64 >= (1 << 63)) {
+            $unsigned64 -= (1 << 64);
+        }
+
+        // Split into seconds and milliseconds.
+        $seconds = intdiv($unsigned64, 1000);
+        $millisecondsRemainder = $unsigned64 - $seconds * 1000;
+
+        // Normalize negative millisecond remainders (e.g., for pre-1970 values)
+        if (0 > $millisecondsRemainder) {
+            $millisecondsRemainder += 1000;
+
+            --$seconds;
+        }
+
+        // Build "U.u" string (seconds.microseconds). Pad ms to 3 digits, then add 000 to get microseconds.
+        $epochWithMicros = \sprintf('%d.%03d000', $seconds, $millisecondsRemainder);
+
+        $datetime = \DateTimeImmutable::createFromFormat(
+            'U.u',
+            $epochWithMicros,
+            new \DateTimeZone('UTC'),
+        );
+
+        if (false === $datetime) {
+            throw new \RuntimeException('Unable to parse ICU milliseconds pair.');
+        }
+
+        return $datetime->format('Y-m-d');
+    }
+
     protected function scanLocales(LocaleScanner $scanner, string $sourceDir): array
     {
         return $scanner->scanLocales($sourceDir.'/curr');
@@ -102,6 +150,7 @@ protected function generateDataForMeta(BundleEntryReaderInterface $reader, strin
         $data = [
             'Currencies' => $this->currencyCodes,
             'Meta' => $this->generateCurrencyMeta($supplementalDataBundle),
+            'Map' => $this->generateCurrencyMap($supplementalDataBundle),
             'Alpha3ToNumeric' => $this->generateAlpha3ToNumericMapping($numericCodesBundle, $this->currencyCodes),
         ];
 
@@ -125,6 +174,83 @@ private function generateCurrencyMeta(ArrayAccessibleResourceBundle $supplementa
         return iterator_to_array($supplementalDataBundle['CurrencyMeta']);
     }
 
+    /**
+     * @return array<non-empty-string, array>
+     */
+    private function generateCurrencyMap(mixed $supplementalDataBundle): array
+    {
+        /**
+         * @var list<non-empty-string, list<non-empty-string, array{
+         *       from?: non-empty-string,
+         *       to?: non-empty-string,
+         *       tender?: false
+         *      }>>  $regionsData
+         */
+        $regionsData = [];
+
+        /**
+         * The key is the country iso3166 identifier (e.g. "CH").
+         *
+         * @var array<non-empty-string, \ResourceBundle> $regions
+         */
+        $regions = iterator_to_array($supplementalDataBundle['CurrencyMap']);
+
+        foreach ($regions as $regionId => $region) {
+            /**
+             * @var list<\ResourceBundle> $currencies
+             */
+            $currencies = iterator_to_array($region);
+
+            foreach ($currencies as $metadata) {
+                /**
+                 * Note 1: The "to" property (if present) is always greater than "from".
+                 * Note 2: The "to" property may be missing if the currency is still in use.
+                 * Note 3: The "tender" property indicates whether the country legally recognizes the currency within
+                 *         its borders. This property is explicitly set to `false` only if that is not the case;
+                 *         otherwise, it is `true` by default.
+                 * Note 4: The "from" and "to" dates are not stored as strings; they are stored as a pair of integers.
+                 * Note 5: The "to" property may be missing if "tender" is set to `false`.
+                 *
+                 * @var array{
+                 *        from?: array{0: int, 1: int},
+                 *        to?: array{0: int, 2: int},
+                 *        tender?: bool,
+                 *        id: non-empty-string
+                 *      } $metadata
+                 */
+                $metadata = iterator_to_array($metadata);
+
+                $id = $metadata['id'];
+
+                unset($metadata['id']);
+
+                if (\array_key_exists($id, self::DENYLIST)) {
+                    continue;
+                }
+
+                if (\array_key_exists('from', $metadata)) {
+                    $metadata['from'] = self::icuPairToDate($metadata['from']);
+                }
+
+                if (\array_key_exists('to', $metadata)) {
+                    $metadata['to'] = self::icuPairToDate($metadata['to']);
+                }
+
+                if (\array_key_exists('tender', $metadata)) {
+                    $metadata['tender'] = filter_var($metadata['tender'], \FILTER_VALIDATE_BOOLEAN, \FILTER_NULL_ON_FAILURE);
+
+                    if (null === $metadata['tender']) {
+                        throw new \RuntimeException('Unexpected boolean value for tender attribute.');
+                    }
+                }
+
+                $regionsData[$regionId][$id] = $metadata;
+            }
+        }
+
+        return $regionsData;
+    }
+
     private function generateAlpha3ToNumericMapping(ArrayAccessibleResourceBundle $numericCodesBundle, array $currencyCodes): array
     {
         $alpha3ToNumericMapping = iterator_to_array($numericCodesBundle['codeMap']);
-Original file line number
+Diff line change
@@ Expand Up / @@ -5,6 +5,7 @@ CHANGELOG @@
     ---
      * Allow Kosovo as a component region, controlled by the `SYMFONY_INTL_WITH_USER_ASSIGNED` env var
+     * Add `isActive()` to check if a given currency is available in at least 1 region
 .1
     ---
@@ Expand Down @@