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 <?php
 /**
  * Zend Framework
  *
  * LICENSE
  *
  * This source file is subject to the new BSD license that is bundled
  * with this package in the file LICENSE.txt.
  * It is also available through the world-wide-web at this URL:
  * http://framework.zend.com/license/new-bsd
  * If you did not receive a copy of the license and are unable to
  * obtain it through the world-wide-web, please send an email
  * to license@zend.com so we can send you a copy immediately.
  *
  * @category   Zend
  * @package    Zend_View
  * @subpackage Helper
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @version    $Id$
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 
 /** Zend_View_Helper_Abstract.php */
 // require_once 'Zend/View/Helper/Abstract.php';
 
 /**
  * Helper for declaring default values of template variables
  *
  * @package    Zend_View
  * @subpackage Helper
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_View_Helper_DeclareVars extends Zend_View_Helper_Abstract
 {
     /**
      * The view object that created this helper object.
      * @var Zend_View
      */
     public $view;
 
     /**
      * Declare template vars to set default values and avoid notices when using strictVars
      *
      * Primarily for use when using {@link Zend_View_Abstract::strictVars() Zend_View strictVars()},
      * this helper can be used to declare template variables that may or may
      * not already be set in the view object, as well as to set default values.
      * Arrays passed as arguments to the method will be used to set default
      * values; otherwise, if the variable does not exist, it is set to an empty
      * string.
      *
      * Usage:
      * <code>
      * $this->declareVars(
      *     'varName1',
      *     'varName2',
      *     array('varName3' => 'defaultValue',
      *           'varName4' => array()
      *     )
      * );
      * </code>
      *
      * @param string|array variable number of arguments, all string names of variables to test
      * @return void
      */
     public function declareVars()
     {
         $args = func_get_args();
         foreach($args as $key) {
             if (is_array($key)) {
                 foreach ($key as $name => $value) {
                     $this->_declareVar($name, $value);
                 }
             } else if (!isset($view->$key)) {
                 $this->_declareVar($key);
             }
         }
     }
 
     /**
      * Set a view variable
      *
      * Checks to see if a $key is set in the view object; if not, sets it to $value.
      *
      * @param  string $key
      * @param  string $value Defaults to an empty string
      * @return void
      */
     protected function _declareVar($key, $value = '')
     {
         if (!isset($this->view->$key)) {
             $this->view->$key = $value;
         }
     }
 }