root/modules/branches/2.8/callback/install.php

<?php
//This file is part of FreePBX.
//
//    FreePBX is free software: you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation, either version 2 of the License, or
//    (at your option) any later version.
//
//    FreePBX is distributed in the hope that it will be useful,
//    but WITHOUT ANY WARRANTY; without even the implied warranty of
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//    GNU General Public License for more details.
//
//    You should have received a copy of the GNU General Public License
//    along with FreePBX.  If not, see <http://www.gnu.org/licenses/>.
//
// Copyright (C) 2004 Coalescent Systems Inc. (info@coalescentsystems.ca)
global $db;
global $amp_conf;

$autoincrement = ($amp_conf["AMPDBENGINE"] == "sqlite3") ? "AUTOINCREMENT":"AUTO_INCREMENT";

$sql = "CREATE TABLE IF NOT EXISTS callback (
  callback_id INTEGER NOT NULL PRIMARY KEY $autoincrement,
  description VARCHAR( 50 ) ,
  callbacknum VARCHAR( 100 ) ,
  destination VARCHAR( 50 ) ,
  sleep INTEGER,
  deptname VARCHAR( 50 )
);";

$check = $db->query($sql);
if (DB::IsError($check)) {
  die_freepbx( "Can not create `callback` table: " . $check->getMessage() .  "\n");
}


// Version 1.1 upgrade - add sleep time.
$sql = "SELECT sleep FROM callback";
$check = $db->getRow($sql, DB_FETCHMODE_ASSOC);
if(DB::IsError($check)) {
  // add new field
  sql('ALTER TABLE callback ADD COLUMN sleep INT DEFAULT 0');
  }

$results = array();
$sql = "SELECT callback_id, destination FROM callback";
$results = $db->getAll($sql, DB_FETCHMODE_ASSOC);
if (!DB::IsError($results)) { // error - table must not be there
  foreach ($results as $result) {
    $old_dest  = $result['destination'];
    $callback_id    = $result['callback_id'];

    $new_dest = merge_ext_followme(trim($old_dest));
    if ($new_dest != $old_dest) {
      $sql = "UPDATE callback SET destination = '$new_dest' WHERE callback_id = $callback_id  AND destination = '$old_dest'";
      $results = $db->query($sql);
      if(DB::IsError($results)) {
        die_freepbx($results->getMessage());
      }
    }
  }
}

?>