Generating and id

[lerro]

I need some help.

I'm still trying to find a function that i can use to generate a date

Essentially, if i can get a date e.g 20100107 (yyyymmdd)
and then add to that the time, e.g. 161001 (hh:mm:ss)
and then a random number of 4 digits 0001

What i end up with is a unique id that can never duplicate, since each day is unique, in addition, hours and seconds are constantly increasing
and the 4 digits are also random

So, in 1 second, it's unlikely that the random numbers will be duplicated

An ID would therefore be 201001071610010001 (18 digits)

The current date gets generated, but is then stirpped out/comverted to an integer

Could someone please advice and show how i could implement this well?

[dagon]

date() and rand() to do it your way
better to just use uniqid()