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_Json

    17  * @subpackage Expr

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

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

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

    21  */

    22 

    23 /**

    24  * Class for Zend_Json encode method.

    25  *

    26  * This class simply holds a string with a native Javascript Expression,

    27  * so objects | arrays to be encoded with Zend_Json can contain native

    28  * Javascript Expressions.

    29  *

    30  * Example:

    31  * <code>

    32  * $foo = array(

    33  *     'integer'  =>9,

    34  *     'string'   =>'test string',

    35  *     'function' => Zend_Json_Expr(

    36  *         'function(){ window.alert("javascript function encoded by Zend_Json") }'

    37  *     ),

    38  * );

    39  *

    40  * Zend_Json::encode($foo, false, array('enableJsonExprFinder' => true));

    41  * // it will returns json encoded string:

    42  * // {"integer":9,"string":"test string","function":function(){window.alert("javascript function encoded by Zend_Json")}}

    43  * </code>

    44  *

    45  * @category   Zend

    46  * @package    Zend_Json

    47  * @subpackage Expr

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

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

    50  */

    51 class Zend_Json_Expr

    52 {

    53     /**

    54      * Storage for javascript expression.

    55      *

    56      * @var string

    57      */

    58     protected $_expression;

    59 

    60     /**

    61      * Constructor

    62      *

    63      * @param  string $expression the expression to hold.

    64      * @return void

    65      */

    66     public function __construct($expression)

    67     {

    68         $this->_expression = (string) $expression;

    69     }

    70 

    71     /**

    72      * Cast to string

    73      *

    74      * @return string holded javascript expression.

    75      */

    76     public function __toString()

    77     {

    78         return $this->_expression;

    79     }

    80 }