C:/xampp/htdocs/moodle/mod/label/db/upgrade.php

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<?php

// This file is part of Moodle - http://moodle.org/
//
// Moodle 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 3 of the License, or
// (at your option) any later version.
//
// Moodle 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 Moodle.  If not, see <http://www.gnu.org/licenses/>.

// This file keeps track of upgrades to
// the label module
//
// Sometimes, changes between versions involve
// alterations to database structures and other
// major things that may break installations.
//
// The upgrade function in this file will attempt
// to perform all the necessary actions to upgrade
// your older installation to the current version.
//
// If there's something it cannot do itself, it
// will tell you what you need to do.
//
// The commands in here will all be database-neutral,
// using the methods of database_manager class
//
// Please do not forget to use upgrade_set_timeout()
// before any action that may take longer time to finish.

defined('MOODLE_INTERNAL') || die;

function xmldb_label_upgrade($oldversion) {
    global $CFG, $DB;

    $dbman = $DB->get_manager();

//===== 1.9.0 upgrade line ======//

    if ($oldversion < 2009042200) {

        $table = new xmldb_table('label');
        $field = new xmldb_field('content', XMLDB_TYPE_TEXT, 'small', null, XMLDB_NOTNULL, null, null, 'name');

        $dbman->rename_field($table, $field, 'intro');

        upgrade_mod_savepoint(true, 2009042200, 'label');
    }

    if ($oldversion < 2009042201) {

        $table = new xmldb_table('label');
        $field = new xmldb_field('introformat', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, null, null, '0', 'intro');

        $dbman->add_field($table, $field);

        // all existing lables in 1.9 are in HTML format
        $DB->set_field('label', 'introformat', FORMAT_HTML, array());

        upgrade_mod_savepoint(true, 2009042201, 'label');
    }

    // Moodle v2.1.0 release upgrade line
    // Put any upgrade step following this

    // Moodle v2.2.0 release upgrade line
    // Put any upgrade step following this

    return true;
}