Random 16 number string generation

[Anon]

Hi Folks,

I need to generate a random 16 number string, but I'm at a loss of how to achieve this. Can anyone offer assistance?

Say on one load it generates:

12345678910111213

and another

4685216496520134

Always random and always 16 numbers long.

Thanks for your help, I appreciate it.

Regards,

Lee.

[Anon]

Hello,

I think you're asking for a PHP solution.
Here's one :

<?php
$randchar = "0123456789"; // all the character that can be contained in your string ( feel free to add letter )

srand((double)microtime()*1000000); // initialize random function

for($i=0; $i<16; $i++) // 16 char string
$pass .= $randchar[rand()%strlen $randchar)];

?>

your generated string is in $pass

[Anon]

Try this..

<?php
// seed the random number generator
srand((double)microtime()*1000000);
// create an empty string
$randstring = "";
// loop around 16 times...
for ($i=0;$i<16;$i++) {
// concatenating a random number from 0 to 9
// onto the end
$randstring = $randstring.rand(0,9);
}
echo $randomstring;
?>

have a look at http://www.php.net/manual/ref.math.php
mt_srand() and mt_rand do the same thing but with a 'better' random number. Also watch out for early versions of PHP where the second argument to rand() was a range rather than a maximum value.

hopefully this'll point you in the right direction.

[Anon]

Thanks ever so much, these two have solved my problems exactly!

:-) Thanks again.

[Anon]

Dear Sir,
I need your help for generating 6 digit number using ASP.Please help me for writing code

Thank you

Berti