ParagonIE_Sodium_Compat::randombytes_buf( int $numBytes ): string

4033    public static function randombytes_buf($numBytes)4034    {4035        /* Type checks: */4036        if (!is_int($numBytes)) {4037            if (is_numeric($numBytes)) {4038                $numBytes = (int) $numBytes;4039            } else {4040                throw new TypeError(4041                    'Argument 1 must be an integer, ' . gettype($numBytes) . ' given.'4042                );4043            }4044        }4045        /** @var positive-int $numBytes */4046        if (self::use_fallback('randombytes_buf')) {4047            return (string) call_user_func('\\Sodium\\randombytes_buf', $numBytes);4048        }4049        if ($numBytes < 0) {4050            throw new SodiumException("Number of bytes must be a positive integer");4051        }4052        return random_bytes($numBytes);4053    }