Random Numbers

[Anon]

Real easy question, but how do i a generate a random number between 5000-10000 and check to see if it has already been issued by a tag of YES or NO? If yes then go "www...." or no "www......." Also how do i display a list of 100 currently unisued random numbers?

Thanks for any help in advance

Jules

[Anon]

Generating a random number that lies between 5000 and 10000...hmmmm. You could generate a number and check if it's in that range. If so, keep it. If not, generate a new number. As far tracking which ones have been used, you could create a database table that holds those numbers. Make that field the primary key and force it to become unique. If the number is already in the table, generate a new number.

This begs the question, "Why are you generating random numbers and trying to limit their range?" If they have to meet one of 4999 possibilities, why not just start with 1 and increment by one when you need a new number?

Hank

[Anon]

No, it is for a competition. People have been issued a number by buying a ticket and others and get to choose a number, a random one from the unallocated 5000, generated real by a computer!!! Who knows they may even win.

It is limited 10000 people

Thanks

Jules

[[deleted]]

rtm: http://www.php.net/manual/en/function.mt-rand.php

How will you be storing the 'issued' numbers? in a database I suppose?

[Anon]

Yup,but all i need to know is how to generate numbers between 5000-10000??? Is it that hard???

Thankx
Jules

[Anon]

No, it's not hard at all; vincent supplied a link to the appropriate part of the documentation.