php checksum function

[aissa]

Hi All,

 

I want help in finding checksum php function depending on the results:

 

message : 00079999VER checksum: e

message: 00089999VER checksum: j

message: S0299999TEST checksum: }

 

i can post more results if you want

 

thanks in advanced for your help

[AndyB]

You'll need to be much more specific than that if you expect people to understand your problem. Posting more results isn't likely to help; telling us what you're trying to do would.

[aissa]

thanks for your reply,

 

i am trying to communicate with a server thru serial port, i have all the protocols but still im missing the checksum function, when i send the message to  the server, it reply error wrong check sum, submitted is "x" expected is "y" , i am posting the results coz thats the only information im getting