Description
int 
proc_close ( resource process )
   proc_close() is similar to pclose()
   except that it only works on processes opened by
   proc_open().
   proc_close() waits for the process to terminate, and
   returns its exit code.  If you have open pipes to that process, you
   should fclose() them prior to calling this function in
   order to avoid a deadlock - the child process may not be able to exit
   while the pipes are open.