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<?php interface TranslatorInterface { /** * Translates the given message. * * When a number is provided as a parameter named "%count%", the message is parsed for plural * forms and a translation is chosen according to this number using the following rules: * * Given a message with different plural translations separated by a * pipe (|), this method returns the correct portion of the message based * on the given number, locale and the pluralization rules in the message * itself. * * The message supports two different types of pluralization rules: * * interval: {0} There are no apples|{1} There is one apple|]1,Inf] There are %count% apples * indexed: There is one apple|There are %count% apples * * The indexed solution can also contain labels (e.g. one: There is one apple). * This is purely for making the translations more clear - it does not * affect the functionality. * * The two methods can also be mixed: * {0} There are no apples|one: There is one apple|more: There are %count% apples * * An interval can represent a finite set of numbers: * {1,2,3,4} * * An interval can represent numbers between two numbers: * [1, +Inf] * ]-1,2[ * * The left delimiter can be [ (inclusive) or ] (exclusive). * The right delimiter can be [ (exclusive) or ] (inclusive). * Beside numbers, you can use -Inf and +Inf for the infinite. * * @see https://en.wikipedia.org/wiki/ISO_31-11 * * @param string $id The message id (may also be an object that can be cast to string) * @param array $parameters An array of parameters for the message * @param string|null $domain The domain for the message or null to use the default * @param string|null $locale The locale or null to use the default * * @return string The translated string * * @throws \InvalidArgumentException If the locale contains invalid characters */ public function trans(string $id, array $parameters = [], string $domain = null, string $locale = null); } final class StubTranslator implements TranslatorInterface { public function trans($id, array $parameters = [], $domain = null, $locale = null): string { return '[trans]'.strtr($id, $parameters).'[/trans]'; } }