PluralFormKey.php

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<?php
 
declare(strict_types=1);
 
namespace ILIAS\Language\ComponentTranslation;
 
final class PluralFormKey
{
    public static function of(string $identifier, int $form): string
    {
        return sprintf('%s [%d]', $identifier, $form);
    }
 
    public static function parse(string $key): ?array
    {
        if (preg_match('/\A(.+) \[(0|[1-9]\d?)\]\z/s', $key, $matches) !== 1) {
            return null;
        }
 
        return [$matches[1], (int) $matches[2]];
    }
}