1 <?php

     2 /**

     3  * Zend Framework

     4  *

     5  * LICENSE

     6  *

     7  * This source file is subject to the new BSD license that is bundled

     8  * with this package in the file LICENSE.txt.

     9  * It is also available through the world-wide-web at this URL:

    10  * http://framework.zend.com/license/new-bsd

    11  * If you did not receive a copy of the license and are unable to

    12  * obtain it through the world-wide-web, please send an email

    13  * to license@zend.com so we can send you a copy immediately.

    14  *

    15  * @category   Zend

    16  * @package    Zend_Pdf

    17  * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

    18  * @license    http://framework.zend.com/license/new-bsd     New BSD License

    19  * @version    $Id: Null.php 20096 2010-01-06 02:05:09Z bkarwin $

    20  */

    21 

    22 

    23 /** Zend_Pdf_Element */

    24 require_once 'Zend/Pdf/Element.php';

    25 

    26 

    27 /**

    28  * PDF file 'null' element implementation

    29  *

    30  * @category   Zend

    31  * @package    Zend_Pdf

    32  * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

    33  * @license    http://framework.zend.com/license/new-bsd     New BSD License

    34  */

    35 class Zend_Pdf_Element_Null extends Zend_Pdf_Element

    36 {

    37     /**

    38      * Object value. Always null.

    39      *

    40      * @var mixed

    41      */

    42     public $value;

    43 

    44 

    45     /**

    46      * Object constructor

    47      */

    48     public function __construct()

    49     {

    50         $this->value = null;

    51     }

    52 

    53 

    54     /**

    55      * Return type of the element.

    56      *

    57      * @return integer

    58      */

    59     public function getType()

    60     {

    61         return Zend_Pdf_Element::TYPE_NULL;

    62     }

    63 

    64 

    65     /**

    66      * Return object as string

    67      *

    68      * @param Zend_Pdf_Factory $factory

    69      * @return string

    70      */

    71     public function toString($factory = null)

    72     {

    73         return 'null';

    74     }

    75 }