private function compressOldPages( $start = 0, $extdb = '' ) {
$chunksize = 50;
$this->output( "Starting from old_id $start...\n" );
private function compressOldPages( $start = 0, $extdb = '' ) {
$chunksize = 50;
$this->output( "Starting from old_id $start...\n" );