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Webmaster Forum / ColdFusion / Advanced Techniques / May 2007random numbers
Hi i did have some code that made up a alfanumeric random number i know it took from a list of abcdefghijklmnopqrstu0123456789 anyway i have lost it and i need a random afla-numeric does anyone know the code to do this? Generate a random number and convert it to hex. > Generate a random number and convert it to hex. That's not going to help with the G-Z part of the alphabet. To the OP: why are you trying to do this? To answer your original question: 1) create a list of valid characters, like you have 2) select a random number between 1 and [length of that list] 3) get the character from the list @ that position and store it in your result string 4) repeat 2-3 until you have a string of the desired length.  SignatureAdam hi Adam, that sound like what i had before, but what is the code to do this? [q][i]Originally posted by: [b][b]JohnGree[/b][/b][/i] hi Adam, that sound like what i had before, but what is the code to do this? [/q] The functions randrange and listgetat, combined with the concatonation operator should work. > hi Adam, that sound like what i had before, but what is the code to do this? Sorry mate, I rarely provide code for solutions that really oughtn't be too far from the grasp of the person needing it. I'm a firm believer in the "teach a person to fish" approach to problem solving. Call me a b@st@rd if you like. Read the docs. Or post your code here, and we can go through where it could use modification. SignatureAdam Hex is a good call, as it will prevent any *UNFORTUNATE* letter combinations The code <cfset rndm = lcase(replace(CreateUUID(), "-", "", "all"))> <cfoutput>#rndm#</cfoutput> will generate a random string of 32 characters from the list a,b,c,...,f,0,1,2,...,9. You can apply a function like left(), right() and so on, to obtain a shorter string. is this the code you have 'lost'?: http://www.cflib.org/udf.cfm?ID=529 SignatureAzadi Saryev Sabai-dee.com http://www.sabai-dee.com |
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