pocketmine\lang\BaseLang::translateString PHP Method

    public function translateString($str, array $params = [], $onlyPrefix = null)
    {
        $baseText = $this->get($str);
        $baseText = $this->parseTranslation(($baseText !== null and ($onlyPrefix === null or strpos($str, $onlyPrefix) === 0)) ? $baseText : $str, $onlyPrefix);
        foreach ($params as $i => $p) {
            $baseText = str_replace("{%{$i}}", $this->parseTranslation((string) $p), $baseText, $onlyPrefix);
        }
        return str_replace("%0", "", $baseText);
        //fixes a client bug where %0 in translation will cause freeze
    }