BASE64DECODE$

The _BASE64DECODE$ function decodes a Base64-encoded string back to its original binary or textual representation.

Syntax

decodedString$ = _BASE64DECODE$(stringToDecode$)

Parameters

• stringToDecode$ is the Base64-encoded string to be decoded. It must conform to the Base64 encoding standard.

Description

• The _BASE64DECODE$ function takes a Base64-encoded string as input and returns the decoded data as a string.
• If the input string is invalid or improperly formatted for Base64, the function will return an empty string.
• It is commonly used for decoding strings that were previously encoded with _BASE64ENCODE$.
• The decoded string may contain binary data, so ensure the target string variable can handle such content if necessary.

Availability

• 

  none

• 

  v4.1.0

• 
• 

  yes

• 

  yes

• 

  yes

Examples

Example 1

Decoding a Base64 string.

CONST encodedString = _ "VGhvJyBtdWNoIGlzIHRha2VuLCBtdWNoIGFiaWRlczsgYW5kIHRobycNCldlIGFyZSBub3Qgbm9" + _ "3IHRoYXQgc3RyZW5ndGggd2hpY2ggaW4gb2xkIGRheXMNCk1vdmVkIGVhcnRoIGFuZCBoZWF2ZW" + _ "47IHRoYXQgd2hpY2ggd2UgYXJlLCB3ZSBhcmU7DQpPbmUgZXF1YWwgdGVtcGVyIG9mIGhlcm9pY" + _ "yBoZWFydHMsDQpNYWRlIHdlYWsgYnkgdGltZSBhbmQgZmF0ZSwgYnV0IHN0cm9uZyBpbiB3aWxs" + _ "DQpUbyBzdHJpdmUsIHRvIHNlZWssIHRvIGZpbmQsIGFuZCBub3QgdG8geWllbGQu" PRINT "Decoded string: "; _BASE64DECODE$(encodedString)

Decoded string: Tho' much is taken, much abides; and tho' We are not now that strength which in old days Moved earth and heaven; that which we are, we are; One equal temper of heroic hearts, Made weak by time and fate, but strong in will To strive, to seek, to find, and not to yield.

See also

• _BASE64ENCODE$
• _INFLATE$, _DEFLATE$

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