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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)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 
 
 /**
  * Abstract class for extension
  */
 // require_once 'Zend/View/Helper/FormElement.php';
 
 
 /**
  * Helper to generate a set of radio button elements
  *
  * @category   Zend
  * @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_FormRadio extends Zend_View_Helper_FormElement
 {
     /**
      * Input type to use
      * @var string
      */
     protected $_inputType = 'radio';
 
     /**
      * Whether or not this element represents an array collection by default
      * @var bool
      */
     protected $_isArray = false;
 
     /**
      * Generates a set of radio button elements.
      *
      * @access public
      *
      * @param string|array $name If a string, the element name.  If an
      * array, all other parameters are ignored, and the array elements
      * are extracted in place of added parameters.
      *
      * @param mixed $value The radio value to mark as 'checked'.
      *
      * @param array $options An array of key-value pairs where the array
      * key is the radio value, and the array value is the radio text.
      *
      * @param array|string $attribs Attributes added to each radio.
      *
      * @return string The radio buttons XHTML.
      */
     public function formRadio($name, $value = null, $attribs = null,
         $options = null, $listsep = "<br />\n")
     {
 
         $info = $this->_getInfo($name, $value, $attribs, $options, $listsep);
         extract($info); // name, value, attribs, options, listsep, disable
 
         // retrieve attributes for labels (prefixed with 'label_' or 'label')
         $label_attribs = array();
         foreach ($attribs as $key => $val) {
             $tmp    = false;
             $keyLen = strlen($key);
             if ((6 < $keyLen) && (substr($key, 0, 6) == 'label_')) {
                 $tmp = substr($key, 6);
             } elseif ((5 < $keyLen) && (substr($key, 0, 5) == 'label')) {
                 $tmp = substr($key, 5);
             }
 
             if ($tmp) {
                 // make sure first char is lowercase
                 $tmp[0] = strtolower($tmp[0]);
                 $label_attribs[$tmp] = $val;
                 unset($attribs[$key]);
             }
         }
 
         $labelPlacement = 'append';
         foreach ($label_attribs as $key => $val) {
             switch (strtolower($key)) {
                 case 'placement':
                     unset($label_attribs[$key]);
                     $val = strtolower($val);
                     if (in_array($val, array('prepend', 'append'))) {
                         $labelPlacement = $val;
                     }
                     break;
             }
         }
 
         // the radio button values and labels
         $options = (array) $options;
 
         // build the element
         $xhtml = '';
         $list  = array();
 
         // should the name affect an array collection?
         $name = $this->view->escape($name);
         if ($this->_isArray && ('[]' != substr($name, -2))) {
             $name .= '[]';
         }
 
         // ensure value is an array to allow matching multiple times
         $value = (array) $value;
 
         // Set up the filter - Alnum + hyphen + underscore
         // require_once 'Zend/Filter/PregReplace.php';
         $pattern = @preg_match('/\pL/u', 'a') 
             ? '/[^\p{L}\p{N}\-\_]/u'    // Unicode
             : '/[^a-zA-Z0-9\-\_]/';     // No Unicode
         $filter = new Zend_Filter_PregReplace($pattern, "");
         
         // add radio buttons to the list.
         foreach ($options as $opt_value => $opt_label) {
 
             // Should the label be escaped?
             if ($escape) {
                 $opt_label = $this->view->escape($opt_label);
             }
 
             // is it disabled?
             $disabled = '';
             if (true === $disable) {
                 $disabled = ' disabled="disabled"';
             } elseif (is_array($disable) && in_array($opt_value, $disable)) {
                 $disabled = ' disabled="disabled"';
             }
 
             // is it checked?
             $checked = '';
             if (in_array($opt_value, $value)) {
                 $checked = ' checked="checked"';
             }
 
             // generate ID
             $optId = $id . '-' . $filter->filter($opt_value);
 
             // Wrap the radios in labels
             $radio = '<label'
                     . $this->_htmlAttribs($label_attribs) . '>'
                     . (('prepend' == $labelPlacement) ? $opt_label : '')
                     . '<input type="' . $this->_inputType . '"'
                     . ' name="' . $name . '"'
                     . ' id="' . $optId . '"'
                     . ' value="' . $this->view->escape($opt_value) . '"'
                     . $checked
                     . $disabled
                     . $this->_htmlAttribs($attribs)
                     . $this->getClosingBracket()
                     . (('append' == $labelPlacement) ? $opt_label : '')
                     . '</label>';
 
             // add to the array of radio buttons
             $list[] = $radio;
         }
         
         // XHTML or HTML for standard list separator?
         if (!$this->_isXhtml() && false !== strpos($listsep, '<br />')) {
             $listsep = str_replace('<br />', '<br>', $listsep);
         }
 
         // done!
         $xhtml .= implode($listsep, $list);
 
         return $xhtml;
     }
 }