Description
Determines whether a value is stored as binary data.
Returns
True, if the value is binary; False, otherwise.
IsBinary(value)
See also
ToBinary, ToBase64, IsNumeric, YesNoFormat
Parameters
Parameter |
Description |
|---|---|
value |
Number or string |
Example
<!--- Create a string of all ASCII characters (32-255) and concatenate them together. ---> <cfset charData =""> <cfloop index="data" from="32" to="255"> <cfset ch=chr(data)> <cfset charData=charData & ch> </cfloop> <b>The following string is the concatenation of all characters (32 to 255) from the ASCII table.</b><br><br> <cfoutput>#htmleditformat(charData)#</cfoutput> <br><br> <!--- Create a Base 64 representation of this string. ---> <cfset data64=toBase64(charData)> <!--- Convert string to binary. ---> <cfset binaryData=toBinary(data64)> <!--- Check to see if it really is a binary value. ---> <cfif IsBinary(binaryData)> The binaryData variable is binary!<br> </cfif> <!--- Convert binary data back to Base 64. ---> <cfset another64=toBase64(binaryData)> <cfif Not IsBinary(another64)> The another64 variable is NOT binary!<br> </cfif> <!--- Compare another64 with data64 to ensure that they are equal. ---> <cfif another64 eq data64> Base 64 representation of binary data is identical to the Base 64 representation of string data. <cfelse> <h3>Conversion error.</h3> </cfif>
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