getfpstatus.php

Linux嵌入式设计配套光盘,学习嵌入式设计可参考

<?php
  //------------------------------------------------------------------>
  //--  GetFPStatus.php                                             -->
  //--  Copyright (c) 2005,2006 by Laddie Group, Inc                -->
  //--                                                              -->
  //------------------------------------------------------------------>

  //------------------------------------------------------------------>
  // LICENSE:
  // Redistribution and use in source and binary forms, with or without
  // modification, are permitted provided that the following conditions
  // are met:
  // 1. Redistributions of source code must retain the above copyright
  //    notice, this list of conditions and the following disclaimer.
  // 2. Redistributions in binary form must reproduce the above copyright
  //    notice, this list of conditions and the following disclaimer in
  //    the documentation and/or other materials provided with the
  //    distribution.
  // 3. The name of the author may not be used to endorse or promote
  //    products derived from this software without specific prior
  //    written permission.
  //
  // THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS
  // OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  // ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
  // INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  // HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  // STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  // IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  // POSSIBILITY OF SUCH DAMAGE.
  //------------------------------------------------------------------>


  // Suppress Postgres error messages
  error_reporting(error_reporting() & 0xFFFD);

  // connect to the database 
  $conn = pg_connect("localhost", "8888", "bsmith");
  if ($conn == "") { 
    exit();
  }

  // execute query 
  $command = "SELECT id, alarm, enabled FROM Zone";
  $result = pg_exec($conn, $command);
  if ($result == "") { 
    pg_freeresult($result);
    pg_close($conn);
    exit();
  }

  // Compute the status as a bit field with a set bit for an alarm
  $status = 0;   
  for($row = 0; $row < pg_NumRows($result); $row++)
  {
    $id      = pg_result($result, $row, 0);
    $alarm   = pg_result($result, $row, 1);
    $enabled = pg_result($result, $row, 2);
    if ($alarm && $enabled) {
      $status += (1 << $row);
    }
  }

  // free the result and close the RTA connection 
  pg_freeresult($result);
  pg_close($conn);

  header("Content-Type: text/html");
  print($status);
?>