URLDECODE |
Description Decodes a URL-encoded string.
Returns A copy of a string, decoded.
Category Conversion functions, Other functions, String functions
Function syntax
    URLDecode(urlEncodedString[, charset])
See also URLEncodedFormat; "Tags and functions for globalizing" in Chapter 17, "Developing Globalized Applications," in ColdFusion MX Developer's Guide ColdFusion MX 6.1: Changed the default charset: the default charset is the character encoding of the URL scope.

ColdFusion MX:

- Changed Unicode support: ColdFusion supports the Java UCS-2 representation of Unicode character values 0-65535. (Earlier releases supported ASCII values.)
- Added the charset parameter.

Parameters
Usage URL encoding formats some characters with a percent sign and the two-character hexadecimal representation of the character. For example, a character whose code is 129 is encoded as %81. A space is encoded with a plus sign. Query strings in HTTP are always URL-encoded.
Example This example creates, encodes, and decodes a string that contains ASCII character codes:
    <cfscript>
       // Build string
       s = "";
       for (c = 1; c lte 256; c = c + 1)
       {
          s = s & chr(c);
       }
       // Encode string and display result
       enc = URLEncodedFormat(s);
       WriteOutput("Encoded string is: '#enc#'.<br>");
       // Decode and compare result with original
       dec = URLDecode(enc);
       if (dec neq s)
       {
          WriteOutput("Decoded is not the same as encoded.");
       }
       else
       {
          WriteOutput("All's quiet on the Western front.");
       }
    </cfscript>

URLENCODEDSTRING |

URL-encoded string or a variable that contains one.

CHARSET |

The character encoding in which the URL is encoded. Optional.

The following list includes commonly used values:

- utf-8
- iso-8859-1
- windows-1252
- us-ascii
- shift_jis
- iso-2022-jp
- euc-jp
- euc-kr
- big5
- euc-cn
- utf-16

For more information on character encoding, see:www.w3.org/International/O-charset.html.

The default value is the character encoding of the URL scope. See SetEncoding.