Description
int 
proc_terminate ( resource process [, int signal] )
   Signals a process (created using
   proc_open()) that it should terminate.
   proc_terminate() returns immediately and does not wait
   for the process to terminate.
  
   The optional
   signal is only useful on POSIX
   operating systems; you may specify a signal to send to the process using
   the kill(2) system call.  The default is
   SIGTERM.
  
   proc_terminate() allows you terminate the process and
   continue with other tasks.  You may poll the process (to see if it has
   stopped yet) by using the proc_get_status() function.