C:/xampp/htdocs/moodle/mod/feedback/delete_item.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/>.

require_once("../../config.php");
require_once("lib.php");
require_once('delete_item_form.php');

$id = required_param('id', PARAM_INT);
$deleteitem = required_param('deleteitem', PARAM_INT);

$PAGE->set_url('/mod/feedback/delete_item.php', array('id'=>$id, 'deleteitem'=>$deleteitem));

if (! $cm = get_coursemodule_from_id('feedback', $id)) {
    print_error('invalidcoursemodule');
}

if (! $course = $DB->get_record("course", array("id"=>$cm->course))) {
    print_error('coursemisconf');
}

if (! $feedback = $DB->get_record("feedback", array("id"=>$cm->instance))) {
    print_error('invalidcoursemodule');
}

if (!$context = get_context_instance(CONTEXT_MODULE, $cm->id)) {
        print_error('badcontext');
}

require_login($course->id, true, $cm);

require_capability('mod/feedback:edititems', $context);

$mform = new mod_feedback_delete_item_form();
$newformdata = array('id'=>$id,
                    'deleteitem'=>$deleteitem,
                    'confirmdelete'=>'1');
$mform->set_data($newformdata);
$formdata = $mform->get_data();

if ($mform->is_cancelled()) {
    redirect('edit.php?id='.$id);
}

if (isset($formdata->confirmdelete) AND $formdata->confirmdelete == 1) {
    feedback_delete_item($formdata->deleteitem);
    redirect('edit.php?id=' . $id);
}


$strfeedbacks = get_string("modulenameplural", "feedback");
$strfeedback  = get_string("modulename", "feedback");

$PAGE->navbar->add(get_string('delete_item', 'feedback'));
$PAGE->set_heading(format_string($course->fullname));
$PAGE->set_title(format_string($feedback->name));
echo $OUTPUT->header();

echo $OUTPUT->heading(format_text($feedback->name));
echo $OUTPUT->box_start('generalbox errorboxcontent boxaligncenter boxwidthnormal');
echo $OUTPUT->heading(get_string('confirmdeleteitem', 'feedback'));
print_string('relateditemsdeleted', 'feedback');
$mform->display();
echo $OUTPUT->box_end();

echo $OUTPUT->footer();