PHP TCP socket application - don't know where to start

[Tabor.Carlton]

I'm trying to do something I've never done here, and don't know where to begin.  I am building an application that communicates with simple xml calls back and forth to a remote server over TCP, and I've made the assumption that PHP socket functions will accomplish this. 

 

When I log onto the remote IP address through fsockopen I get the information I'm expecting, but I need to write some information back in xml format, but nothing I'm doing is working.  So far I've tried putting the incoming data in an array (which works), and then I use the info I need out of that and use fwrite to send data back.  I am not getting anything in return and just wonder if I am even on the right track.

 

Any help is GREATLY appreciated.

 

Thanks,

 

Tabor Carlton

[AV1611]

I've done a similar project before.

 

You REALLY need the spec for the device to tell it what it wants to hear.

 

I know in my case I had to do some binary/hex junk.

 

Are you sure it ONLY requires xml? Do you have the correct xml?