parseEscapeSequences example

if ('b' === $str[0]) {
            $bLength = 1;
        }

        if ('\'' === $str[$bLength]) {
            return str_replace(
                ['\\\\', '\\\''],
                ['\\', '\''],
                substr($str, $bLength + 1, -1)
            );
        } else {
            return self::parseEscapeSequences(substr($str, $bLength + 1, -1), '"');
        }
    }

    /** * Parses escape sequences in strings (all string types apart from single quoted). * * @param string $str String without quotes * @param string|null $quote Quote type */
    public static function parseEscapeSequences(string $str, string $quote = null): string
    {