source: code/Website/php5-ofc-library/lib/OFC/Elements/Axis/OFC_Elements_Axis_X.php

<?php
/**
 * PHP Integration of Open Flash Chart
 * Copyright (C) 2008 John Glazebrook <open-flash-chart@teethgrinder.co.uk>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

require_once('OFC/Elements/OFC_Elements_Axis.php');
require_once('OFC/Elements/Axis/OFC_Elements_Axis_X_Label_Set.php');

class OFC_Elements_Axis_X extends OFC_Elements_Axis
{
        function OFC_Elements_Axis_X()
    {
        parent::OFC_Elements_Axis();
    }

        function set_stroke( $stroke )
        {
                $this->stroke = $stroke;
        }

        function set_tick_height( $height )
        {
                $this->{'tick-height'} = $height;
        }

        // $o is a boolean
        function set_offset( $o )
        {
                $this->offset = ($o) ? true : false;
        }

        function set_3d( $val )
        {
                $this->{'3d'} = $val;
        }

        function set_labels( $x_axis_labels )
        {
                $this->labels = $x_axis_labels;
        }

        function set_range( $min, $max, $steps=1 )
        {
                $this->min = $min;
                $this->max = $max;
                $this->set_steps( $steps );
        }

        /**
         * helper function to make the examples
         * simpler.
         */
        function set_labels_from_array( $a )
        {
                $x_axis_labels = new OFC_Elements_Axis_X_Label_Set();
                $x_axis_labels->set_labels( $a );

                $this->labels = $x_axis_labels;

                if( isset( $this->steps ) )
        {
                        $x_axis_labels->set_steps( $this->steps );
        }
        }
}