automatically generate random number

[eluser]Bigil Michael[/eluser]
in my project

i want to send an automatically generated voucher code to the customer for each purchase.

can any one help me?
is it possible to generate voucher code automatically in codeigniter.

any code or suggestions are accepted

[eluser]Bigil Michael[/eluser]
can anyone help me???

[eluser]danmontgomery[/eluser]
http://lmgtfy.com/?q=php+generate+random+string

[eluser]Eric Barnes[/eluser]
Even better:
random_string()

http://ellislab.com/codeigniter/user-gui...elper.html

Then after you create just do a query to verify it is indeed unique.