ParagonIE_Sodium_Compat::base642bin( string $encoded, int $variant, string $ignore = '' ): string

196    public static function base642bin(197        #[\SensitiveParameter]198        $encoded,199        $variant,200        $ignore = ''201    ) {202        /* Type checks: */203        ParagonIE_Sodium_Core_Util::declareScalarType($encoded, 'string', 1);204 205        /** @var string $encoded */206        $encoded = (string) $encoded;207        if (ParagonIE_Sodium_Core_Util::strlen($encoded) === 0) {208            return '';209        }210 211        // Just strip before decoding212        if (!empty($ignore)) {213            $encoded = str_replace($ignore, '', $encoded);214        }215 216        try {217            switch ($variant) {218                case self::BASE64_VARIANT_ORIGINAL:219                    return ParagonIE_Sodium_Core_Base64_Original::decode($encoded, true);220                case self::BASE64_VARIANT_ORIGINAL_NO_PADDING:221                    return ParagonIE_Sodium_Core_Base64_Original::decode($encoded, false);222                case self::BASE64_VARIANT_URLSAFE:223                    return ParagonIE_Sodium_Core_Base64_UrlSafe::decode($encoded, true);224                case self::BASE64_VARIANT_URLSAFE_NO_PADDING:225                    return ParagonIE_Sodium_Core_Base64_UrlSafe::decode($encoded, false);226                default:227                    throw new SodiumException('invalid base64 variant identifier');228            }229        } catch (Exception $ex) {230            if ($ex instanceof SodiumException) {231                throw $ex;232            }233            throw new SodiumException('invalid base64 string');234        }235    }