function check_for_changes($row, $row_alternatives)
{
global $contentManager, $cid, $glossary, $glossary_ids_related, $addslashes;
$changes = array();
if ($row && strcmp(trim($addslashes($_POST['title'])), addslashes($row['title']))) {
$changes[0] = true;
} else {
if (!$row && $_POST['title']) {
$changes[0] = true;
}
}
if ($row && strcmp($addslashes(trim($_POST['head'])), trim(addslashes($row['head'])))) {
$changes[0] = true;
} else {
if (!$row && $_POST['head']) {
$changes[0] = true;
}
}
if ($row && strcmp($addslashes(trim($_POST['body_text'])), trim(addslashes($row['text'])))) {
$changes[0] = true;
} else {
if (!$row && $_POST['body_text']) {
$changes[0] = true;
}
}
if ($row && strcmp($addslashes(trim($_POST['weblink_text'])), trim(addslashes($row['text'])))) {
$changes[0] = true;
} else {
if (!$row && $_POST['weblink_text']) {
$changes[0] = true;
}
}
/* use customized head: */
if ($row && isset($_POST['use_customized_head']) && $_POST['use_customized_head'] != $row['use_customized_head']) {
$changes[0] = true;
}
/* formatting: */
if ($row && strcmp(trim($_POST['formatting']), $row['formatting'])) {
$changes[0] = true;
} else {
if (!$row && $_POST['formatting']) {
$changes[0] = true;
}
}
/* release date: */
if ($row && strcmp(substr(generate_release_date(), 0, -2), substr($row['release_date'], 0, -2))) {
/* the substr was added because sometimes the release_date in the db has the seconds field set, which we dont use */
/* so it would show a difference, even though it should actually be the same, so we ignore the seconds with the -2 */
/* the seconds gets added if the course was created during the installation process. */
$changes[1] = true;
} else {
if (!$row && strcmp(generate_release_date(), generate_release_date(true))) {
$changes[1] = true;
}
}
/* related content: */
$row_related = $contentManager->getRelatedContent($cid);
if (is_array($_POST['related']) && is_array($row_related)) {
$sum = array_sum(array_diff($_POST['related'], $row_related));
$sum += array_sum(array_diff($row_related, $_POST['related']));
if ($sum > 0) {
$changes[1] = true;
}
} else {
if (!is_array($_POST['related']) && !empty($row_related)) {
$changes[1] = true;
}
}
/* keywords */
if ($row && strcmp(trim($_POST['keywords']), $row['keywords'])) {
$changes[1] = true;
} else {
if (!$row && $_POST['keywords']) {
$changes[1] = true;
}
}
/* glossary */
if (is_array($_POST['glossary_defs'])) {
global $glossary_ids;
foreach ($_POST['glossary_defs'] as $w => $d) {
$key = in_array_cin($w, $glossary_ids);
if ($key === false) {
/* new term */
$changes[2] = true;
break;
} else {
if ($cid && ($d && $d != $glossary[$glossary_ids[$key]])) {
/* changed term */
$changes[2] = true;
break;
}
}
}
if (is_array($_POST['related_term'])) {
foreach ($_POST['related_term'] as $term => $r_id) {
if ($glossary_ids_related[$term] != $r_id) {
$changes[2] = true;
break;
}
}
}
}
/* adapted content */
if (isset($_POST['use_post_for_alt'])) {
foreach ($_POST as $alt_id => $alt_value) {
if (substr($alt_id, 0, 4) == 'alt_' && $alt_value != $row_alternatives[$alt_id]) {
$changes[3] = true;
break;
}
}
}
/* test & survey */
if ($row && isset($_POST['test_message']) && $_POST['test_message'] != $row['test_message']) {
$changes[4] = true;
}
if ($row && isset($_POST['allow_test_export']) && $_POST['allow_test_export'] != $row['allow_test_export']) {
$changes[4] = true;
}
return $changes;
}
// needed to display content pages. A single row is needed here.
foreach ($content_array as $content_sub) {
$content_row = $content_sub;
}
}
if (defined('AT_FORCE_GET_FILE') && AT_FORCE_GET_FILE) {
$course_base_href = 'get.php/';
} else {
$course_base_href = 'content/' . $_SESSION['course_id'] . '/';
}
// save changes
if ($_POST['submit']) {
if ($_POST['title'] == '') {
$msg->addError(array('EMPTY_FIELDS', _AT('title')));
}
if (!($release_date = generate_release_date())) {
$msg->addError('BAD_DATE');
}
if (!$msg->containsErrors()) {
$_POST['title'] = $content_row['title'] = $addslashes($_POST['title']);
if ($cid > 0) {
// edit existing content
$err = $contentManager->editContent($cid, $_POST['title'], '', '', '', $content_row['formatting'], $release_date, '', $content_row['use_customized_head'], '', $content_row['allow_test_export'], CONTENT_TYPE_FOLDER);
} else {
// add new content
// find out ordering and content_parent_id
if ($pid) {
// insert sub content folder
$ordering = count($contentManager->getContent($pid)) + 1;
} else {
// insert a top content folder
