nukeNS.php

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<?php
require_once( __DIR__ . '/Maintenance.php' );

class NukeNS extends Maintenance {
        public function __construct() {
                parent::__construct();
                $this->mDescription = "Remove pages with only 1 revision from any namespace";
                $this->addOption( 'delete', "Actually delete the page" );
                $this->addOption( 'ns', 'Namespace to delete from, default NS_MEDIAWIKI', false, true );
                $this->addOption( 'all', 'Delete everything regardless of revision count' );
        }

        public function execute() {
                $ns = $this->getOption( 'ns', NS_MEDIAWIKI );
                $delete = $this->getOption( 'delete', false );
                $all = $this->getOption( 'all', false );
                $dbw = wfGetDB( DB_MASTER );
                $dbw->begin( __METHOD__ );

                $tbl_pag = $dbw->tableName( 'page' );
                $tbl_rev = $dbw->tableName( 'revision' );
                $res = $dbw->query( "SELECT page_title FROM $tbl_pag WHERE page_namespace = $ns" );

                $n_deleted = 0;

                foreach ( $res as $row ) {
                        // echo "$ns_name:".$row->page_title, "\n";
                        $title = Title::makeTitle( $ns, $row->page_title );
                        $id   = $title->getArticleID();

                        // Get corresponding revisions
                        $res2 = $dbw->query( "SELECT rev_id FROM $tbl_rev WHERE rev_page = $id" );
                        $revs = array();

                        foreach ( $res2 as $row2 ) {
                                $revs[] = $row2->rev_id;
                        }
                        $count = count( $revs );

                        // skip anything that looks modified (i.e. multiple revs)
                        if ( $all || $count == 1 ) {
                                # echo $title->getPrefixedText(), "\t", $count, "\n";
                                $this->output( "delete: " . $title->getPrefixedText() . "\n" );

                                // as much as I hate to cut & paste this, it's a little different, and
                                // I already have the id & revs
                                if ( $delete ) {
                                        $dbw->query( "DELETE FROM $tbl_pag WHERE page_id = $id" );
                                        $dbw->commit( __METHOD__ );
                                        // Delete revisions as appropriate
                                        $child = $this->runChild( 'NukePage', 'nukePage.php' );
                                        $child->deleteRevisions( $revs );
                                        $this->purgeRedundantText( true );
                                        $n_deleted ++;
                                }
                        } else {
                          $this->output( "skip: " . $title->getPrefixedText() . "\n" );
                        }
                }
                $dbw->commit( __METHOD__ );

                if ( $n_deleted > 0 ) {
                        # update statistics - better to decrement existing count, or just count
                        # the page table?
                        $pages = $dbw->selectField( 'site_stats', 'ss_total_pages' );
                        $pages -= $n_deleted;
                        $dbw->update(
                                'site_stats',
                                array( 'ss_total_pages' => $pages ),
                                array( 'ss_row_id' => 1 ),
                                __METHOD__
                        );
                }

                if ( !$delete ) {
                        $this->output( "To update the database, run the script with the --delete option.\n" );
                }
        }
}

$maintClass = "NukeNS";
require_once( RUN_MAINTENANCE_IF_MAIN );