อยากเขียนโปรแกรม SSH Client ติดต่อกับ OpenSSH-Server บน Linux Server ด้วย PHP รบกวนช่วยแนะนำด้วยครับ

   $callbacks = array('disconnect' => 'my_ssh_disconnect');
    $username = $SCONFIG['username'];
    $password = $SCONFIG['password'];
    $remotepath = $SCONFIG['remotepath'];
    $localpath =  $SCONFIG['localpath'];

  $methods = array(
     'kex' => 'diffie-hellman-group1-sha1',
     'client_to_server' => array(
                'crypt' => '3des-cbc',
                 'comp' => 'none'),
     'server_to_client' => array(
                'crypt' => 'aes256-cbc,aes192-cbc,aes128-cbc',
                 'comp' => 'none')
  );

    //$connection = ssh2_connect($host, 22);
    $connection = ssh2_connect($host, 22, $methods, $callbacks);
    ssh2_auth_password($connection, $username, $password);
   if (!$connection)
   {
     echo "Connection Failed<br>\n";
     exit();
   }


   $sftp = ssh2_sftp($connection);
   $handledir = "ssh2.sftp://".$sftp.$remotepath;
   $com ="ls $remotepath"; 
   $stream = ssh2_exec($connection, $com); 
   stream_set_blocking($stream,true); 
   
   /*********
    *
    *  ชุดคำสั่งที่ต้องการ
    
   /**********/            
   
   closeconnect($connection);
  
   /*******************************/
   function closeconnect($connect)
    {
     ssh2_exec($connect, 'exit');
     return;
    }
  function my_ssh_disconnect($reason, $message, $language) {
     printf("Server disconnected with reason code [%d] and message: %s\n",
         $reason, $message);
  }

  exit();