PHP to echo ID based on date+IP?

[damien275x]

Hi,

 

I am looking to use PHP to create a unique order number.

I can't be bothered linking to a database etc, I am thinking creating a string of 10 characters based on current time down to the second plus a random number, or something based on the users IP address? Reduce the chances/odds someone has the exact same number. It's for a small system. Can anyone help me?

 

I want it to be about 8-10 numbers. like 20120403xxxx where xxxx is the random numbers based on IP or a random digits.

 

Thanks everyone

 

[Jessica]

considering a timestamp is 10 digits, you could just use time();

[damien275x]

Thanks, but also as users could access the page at exactly the same time, they may have the same ID for their order

Can I + something to the timestamp? Reduces the odds to the point where I think i'd be OK with it