Returns plural form index for a specific number.

The index is computed from the formula of this language.

Parameters

int $count: Number to return plural for.

string|null $langcode: (optional) Language code to translate to a language other than what is used to display the page.

Return value

int The numeric index of the plural variant to use for this $langcode and $count combination or -1 if the language was not found or does not have a plural formula.

File

core/modules/locale/src/TranslationManager.php, line 37

Class

TranslationManager

Plural index implementation.

Namespace

Drupal\locale

Code

protected function getPluralIndex(int $count, ?string $langcode = NULL) : int {
  $langcode = $langcode ?: $this->defaultLangcode;
  // Retrieve the plural formulas for all languages.
  $plural_formulas = $this->pluralFormula
    ->getFormula($langcode);
  // If there is a plural formula for the language, evaluate it for the
  // given $count.
  if (!empty($plural_formulas)) {
    // Plural formulas are stored as an array for 0-199. 100 is the highest
    // modulo used but storing 0-99 is not enough because below 100 we often
    // find exceptions (1, 2, etc).
    $index = $count > 199 ? 100 + $count % 100 : $count;
    return $plural_formulas[$index] ?? $plural_formulas['default'];
  }
  elseif ($langcode == 'en') {
    return (int) ($count != 1);
  }
  else {
    return -1;
  }
}

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