root/contributed_modules/modules/customcontexts/install.php

<?php /* $Id: install.php $ */
//
//This program 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.
//
//This program 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.
?>
<!--
<font color="red"><strong>You have installed the Custom Contexts Module!<BR>
        </strong></font><BR>
-->
<?php
customcontexts_updatedb();



//bring db up to date on install/upgrade
function customcontexts_updatedb() {
        global $db;
        $sql = "ALTER IGNORE TABLE `customcontexts_includes` ADD `timegroupid` INT NULL AFTER `include` ;";
        $db->query($sql);
        $sql = "ALTER IGNORE TABLE `customcontexts_includes_list` ADD `missing` BOOL NOT NULL DEFAULT '0';";
        $db->query($sql);
        $sql = "ALTER IGNORE TABLE `customcontexts_contexts` ADD `dialrules` VARCHAR( 1000 ) NULL;";
        $db->query($sql);
        $sql = "ALTER IGNORE TABLE `customcontexts_includes` ADD `userules` VARCHAR( 10 ) NULL ;";
        $db->query($sql);
        $sql = "ALTER IGNORE TABLE `customcontexts_contexts` ADD `faildestination` VARCHAR( 250 ) NULL , ADD `featurefaildestination` VARCHAR( 250 ) NULL ;";
        $db->query($sql);
//0.3.0
        $sql = "ALTER IGNORE TABLE `customcontexts_contexts` ADD `failpin` VARCHAR( 100 ) NULL , ADD `failpincdr` BOOL NOT NULL DEFAULT '0', ADD `featurefailpin` VARCHAR( 100 ) NULL , ADD `featurefailpincdr` BOOL NOT NULL DEFAULT '0';";
        $db->query($sql);
//0.3.2
        $sql = "ALTER IGNORE TABLE `customcontexts_includes_list` ADD `sort` INT NOT NULL DEFAULT '0';";
        $db->query($sql);
}


?>