function _cm_ListView_print_before ($prev_row, $curr_row)
    // allow extra rows to be created in List View
    {
        $output = array();

        if (!empty($prev_row)) {
            // row has changed
            if (substr($prev_row['last_name'], 0, 1) != substr($curr_row['last_name'], 0, 1)) {
            	$this->pdf->AddPage();
            } // if
        } // if

        $output[0]['pers_type_desc'] = 'before ' .$curr_row['person_id'];

        return $output;

    } // _cm_ListView_print_before

    // ****************************************************************************
    function _cm_ListView_print_after ($curr_row)
    // allow extra rows to be created in List View
    {
        $output = array();

       	$output[0]['pers_type_desc'] = 'after ' .$curr_row['person_id'];

        return $output;

    } // _cm_ListView_print_after

Fatal error: Call to undefined function convertTZdate() in C:\xampp\includes\std.pdf.class.inc on line 1426

$lines_left = $this->pdf->getLinesRemaining();