VersionX переполнил базу данных

<?php
/**
 * versionCleanX
 *
 * @author Scott Pronych, September 27, 2013
 *
 * DESCRIPTION
 *
 * For use with VersionX to delete old content
 *
 * PROPERTIES:
 *
 * &contentType - can be resource, chunk, plugin, snippet, template, or templatevar
 * &maxVersions - integer value for max number of versions you would like to keep
 *
 * USAGE:
 *
 * [[!versionCleanX? &contentType=`resource` &maxVersions=`10`]]
 *
 */
 
$cx_type = $modx->getOption('contentType', $scriptProperties, 'resource');
$cx_max = (int) $modx->getOption('maxVersions', $scriptProperties, 5);
 
$GLOBALS['count'] = 1;
$GLOBALS['total'] = 0;
$GLOBALS['deleted'] = 0;
$GLOBALS['page_total'] = 0;
$GLOBALS['page_deleted'] = 0;
$GLOBALS['page_name'] = '';
$GLOBALS['prev_content_id'] = 0;
$GLOBALS['prev_version_id'] = 0;
 
switch ($cx_type) {
    case 'chunk':
        $name = 'name';
        break;
    case 'plugin':
        $name = 'name';
        break;
    case 'snippet':
        $name = 'name';
        break;
    case 'template':
        $name = 'templatename';
        break;
    case 'templatevar':
        $name = 'name';
        break;
    default:
        $name = 'title';
        $cx_type = 'resource';
}
 
$GLOBALS['db_name'] = 'modx_versionx_' . $cx_type;
 
function delete_row ($id) {
    global $modx;
    $query = "DELETE FROM `" . $GLOBALS['db_name'] . "` WHERE version_id = '" . $id . "'";
    $result = $modx->query($query);
    if (!is_object($result)) return false;
    else {
        $GLOBALS['deleted']++;
        $GLOBALS['page_deleted']++;
        $GLOBALS['page_total']++;
        $GLOBALS['total']++;
        $GLOBALS['count']++;
        return true;
    }
}
 
function log_row () {
    $GLOBALS['data'] .= '<tr><td>' . $GLOBALS['page_name'] . '</td><td>' . $GLOBALS['page_total'] . '</td><td>' . $GLOBALS['page_deleted'] . "</td></tr>\n";
    $GLOBALS['page_deleted'] = 0;
    $GLOBALS['page_total'] = 1;
    $GLOBALS['count'] = 1;
}
 
$query = "SELECT version_id, content_id, " . $name . " AS page_title FROM `" . $GLOBALS['db_name'] . "` ORDER BY content_id ASC, version_id DESC";
 
$GLOBALS['data'] = '';
$output = 'An error occurred: ';
$versionx = $modx->query($query);
if (!is_object($versionx)) {
   return $output . 'query error ' . print_r($modx->errorInfo(), true);
}
else {
 
while($row = $versionx->fetch(PDO::FETCH_ASSOC)) {
    // New content_id so reset
    if ($prev_content_id == 0) {
        $prev_content_id = $row['content_id'];
        $prev_version_id = $row['version_id'];
        $GLOBALS['total']++;
        $GLOBALS['page_total']++;
        $GLOBALS['count']++;
        $GLOBALS['page_name'] = $row['page_title'];
    }
    elseif ($prev_content_id != $row['content_id']) {
        if ($GLOBALS['count'] > $cx_max) {
            if (!delete_row($prev_version_id)) return $output .  'deleting row for ' . $GLOBALS['page_name'] . ' Row: ' . $prev_content_id . ' ' . print_r($modx->errorInfo(), true);
            $GLOBALS['page_total']--;
 
        }
        else {
            $GLOBALS['total']++;
            $GLOBALS['count']++;
        }
        log_row();
        $prev_content_id = $row['content_id'];
        $prev_version_id = $row['version_id'];
        $GLOBALS['page_name'] = $row['page_title'];
    }
    // Content count is over the max so delete previous row
    elseif ($GLOBALS['count'] > $cx_max) {
            delete_row($prev_version_id);
            $prev_content_id = $row['content_id'];
            $prev_version_id = $row['version_id'];
    }
    else {
        $GLOBALS['count']++;
        $GLOBALS['page_total']++;
        $GLOBALS['total']++;
        $prev_content_id = $row['content_id'];
        $prev_version_id = $row['version_id'];
    }
}
log_row();
 
if ($GLOBALS['data'] != '') {
$output = '<h3>VersionX Cleanup for ' . $GLOBALS['db_name'] . '</h3>
<p>Total records: <strong>' . $GLOBALS['total'] . '</strong>
Total deleted: <strong>' . $GLOBALS['deleted'] . '</strong></p>
<table class="table table-striped">
<thead>
<tr>
<th>Page name</th>
<th>Total found</th>
<th>Deleted</th>
</tr>
</thead>
<tbody>
' . $GLOBALS['data'] .  '</tbody></table>
';
}
else $output = 'Error: no data found.';
}
 
$query = "OPTIMIZE TABLE `" . $GLOBALS['db_name'] . "`";
$versionx = $modx->query($query);
if (!is_object($versionx)) {
   $output = 'Optimize error ' . print_r($modx->errorInfo(), true) . $output;
}
 
return $output;

[[!versionCleanX? &contentType=`resource` &maxVersions=`10`]]

<?php ini_set('memory_limit', '256M');