Remove Old Page Versions Job for old version of concrete5

remove_old_page_versions.php

<?php

defined('C5_EXECUTE') or die("Access Denied.");

Loader::model('page_list');

class RemoveOldPageVersions extends Job {

    public function getJobName() {
        return t("Remove Old Page Versions");
    }

    public function getJobDescription() {
        return t("Removes all except the 10 most recent page versions for each page.");
    }

    public function run() {
        $cfg = new Config;
        $pNum = (int) $cfg->get('OLD_VERSION_JOB_PAGE_NUM');
        $pNum = $pNum < 0 ? 1 : $pNum + 1;

        $pl = new PageList;
        $pl->setItemsPerPage(3);
        /* probably want to keep a record of pages that have been gone through
         * so you don't start from the beginning each time..
         */
        $pages = $pl->getPage($pNum);

        if(!count($pages)) {
            $cfg->save('OLD_VERSION_JOB_PAGE_NUM',0);
            return t("All pages have been processed, starting from beginning on next run.");
        }
        $versionCount = 0;
        $pagesAffected = array();
        foreach($pages as $page) {
            if($page instanceof Page) {
                $pvl = new VersionList($page);
                $pagesAffected[] = $page->getCollectionID();
                foreach(array_slice($pvl->getVersionListArray(), 10) as $v) {
                    if($v instanceof CollectionVersion && !$v->isApproved() && !$v->isMostRecent() ) {
                        @$v->delete();
                        $versionCount++;
                    }
                }
            }
        }
        $pageCount = count($pagesAffected);
        $cfg->save('OLD_VERSION_JOB_PAGE_NUM', $pNum);
        return t('%1$d versions deleted from %2$d pages (%3$s)', $versionCount, $pageCount, implode(',', $pagesAffected));
    }

}