How to compare data to know it is duplicated?

[doyou1425]

I don't want to use duplicated IP, so i want to know if the current IP was used by me before? how to make it?

i can also buy if there are ready-made script. also if anyone can write this, i can pay

 

[amyboose]

Database and script which getting and checking ip in database
I did it before

 

[nicanil]

Save all used IPs to a file and bind it to the List.
Then to check if the current IP is unique try getting a line from the list, and as search criteria use your IP.
Check with "if" action If the result variable is empty. If it is, then this is unique IP, if it is not, then the list contains this IP.

 

[doyou1425]

you are all right, but solved, i was in hurry at that time. find a a guy to write it and cost $60, lol

 

[lokiys]

you are all right, but solved, i was in hurry at that time. find a a guy to write it and cost $60, lol

If You got logic where its checked in loop then you will have a problem when you will get millions of ip to check in loop, it will simply take too much time. Then database way will be the best.