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asp_web_howto thread: How to make a random 15 digit number
Message #1 by "Sebastiaan Janssen" <genuine2001@h...> on Mon, 28 Jan 2002 15:05:24
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Hello,
How would I go about generating a completely random number that exists of
exactly 15 digit and doesn't exist in my database?
Well, I could generate it and then check in my database whether it
exists, if it does I could regenerate one.
But how do I get 15 random digits?! :)
Thanks!
Sebastiaan.
Message #2 by Joe Ingle <Joe@k...> on Mon, 28 Jan 2002 02:51:26 -0000
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<%
function gen_key(digits)
Dim char_array(50)
char_array(0) = "0"
char_array(1) = "1"
char_array(2) = "2"
char_array(3) = "3"
char_array(4) = "4"
char_array(5) = "5"
char_array(6) = "6"
char_array(7) = "7"
char_array(8) = "8"
char_array(9) = "9"
randomize
do while len(output) < digits
num = char_array(Int((9 - 0 + 1) * Rnd + 0))
output = output + num
loop
gen_key = output
end function
response.write (""&gen_key(15)&"")
%>
-----Original Message-----
From: Sebastiaan Janssen [mailto:genuine2001@h...]
Sent: Monday, January 28, 2002 03:05
To: ASP Web HowTo
Subject: [asp_web_howto] How to make a random 15 digit number
Hello,
How would I go about generating a completely random number that exists of
exactly 15 digit and doesn't exist in my database?
Well, I could generate it and then check in my database whether it
exists, if it does I could regenerate one.
But how do I get 15 random digits?! :)
Thanks!
Sebastiaan.
$subst('Email.Unsub').
Message #3 by Oleg Kapeljushnik <c-oleg.kapeljushnik@w...> on Mon, 28 Jan 2002 10:10:57 -0500
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you can create 15 different digits separately and then connect it together
like a string result = n1 & n2 & n3 ...
or as numbers result = n1 * 1 + n2 * 10 + n3 * 100 + n4 * 1000 + ..
my suggestion make a loop.
Oleg
-----Original Message-----
From: Sebastiaan Janssen [mailto:genuine2001@h...]
Sent: January 28, 2002 3:05 PM
To: ASP Web HowTo
Subject: [asp_web_howto] How to make a random 15 digit number
Hello,
How would I go about generating a completely random number that exists of
exactly 15 digit and doesn't exist in my database?
Well, I could generate it and then check in my database whether it
exists, if it does I could regenerate one.
But how do I get 15 random digits?! :)
Thanks!
Sebastiaan.
$subst('Email.Unsub').
Message #4 by "Sebastiaan Janssen" <genuine2001@h...> on Mon, 28 Jan 2002 15:31:19
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Works perfectly! Thanks!
> <%
> function gen_key(digits)
> Dim char_array(50)
>
> char_array(0) = "0"
> char_array(1) = "1"
> char_array(2) = "2"
> char_array(3) = "3"
> char_array(4) = "4"
> char_array(5) = "5"
> char_array(6) = "6"
> char_array(7) = "7"
> char_array(8) = "8"
> char_array(9) = "9"
>
> randomize
> do while len(output) < digits
> num = char_array(Int((9 - 0 + 1) * Rnd + 0))
> output = output + num
> loop
>
> gen_key = output
> end function
>
> response.write (""&gen_key(15)&"")
> %>
> -----Original Message-----
> From: Sebastiaan Janssen [mailto:genuine2001@h...]
> Sent: Monday, January 28, 2002 03:05
> To: ASP Web HowTo
> Subject: [asp_web_howto] How to make a random 15 digit number
>
>
> Hello,
>
> How would I go about generating a completely random number that exists
of
> exactly 15 digit and doesn't exist in my database?
>
> Well, I could generate it and then check in my database whether it
> exists, if it does I could regenerate one.
>
> But how do I get 15 random digits?! :)
>
> Thanks!
> Sebastiaan.
> $subst('Email.Unsub').
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