parse google calendar xml feed incomplete

gistfile1.txt

/** Parsing google calendar xml feed **/                                                                                                                                                  
                                                                                                                                                                                          
class GoogleCal {                                                                                                                                                                         
                                                                                                                                                                                          
      protected $feed_url;                                                                                                                                                                
      protected $data;                                                                                                                                                                    
      public $dates = array();                                                                                                                                                            
      public $line = array();                                                                                                                                                             
                                                                                                                                                                                          
     function __construct($feed_url) {                                                                                                                                                    
         $this->setFeedUrl($feed_url);                                                                                                                                                    
         $this->setData($this->getRawData());                                                                                                                                             
     }                                                                                                                                                                                    

     public function setFeedUrl($feed_url)
     {
         $this->feed_url = $feed_url;
         return $this;
     }

     public function getFeedUrl()
     {
         return $this->feed_url;
     }

     public function setData($data)
     {
         $this->data = $data;
         return $this;
     }

     public function getData()
     {
         return $this->data;
     }

     public function setLine(array $line)
     {
         $this->line = $line;
         return $this;
     }

     public function getLine()
     {
         return $this->line;
     }

     public function setDates(array $dates)
     {
         $this->dates = $dates;
         return $this;
     }
     public function getDates()
     {
         return $this->dates;
     }

     protected function get_string_between($string, $start, $end)
     {
         $string = " ".$string;
         $ini = strpos($string,$start);
         if ($ini == 0) return "";
         $ini += strlen($start);
         $len = strpos($string,$end,$ini) - $ini;
         return substr($string,$ini,$len);
     }

     protected function getFeedContents() {
           return file_get_contents($this->getFeedUrl());
     }

     protected function getRawData() {

           return new SimpleXMLElement($this->getFeedContents());
     }

     protected function formatDate($content) {
         $time_string = $this->get_string_between($content, 'When:', ', 2014');
         $time_string = $time_string . ' 2014';
         $time_string = strtotime($time_string);
         return date("m-d-Y", $time_string);
     }

     protected function formatHtml($title, $url) {
         return '<a href="'.$url.'">'.$title.'</a>';
     }

     protected function formatEndLine($ii, $len) {
        if ($ii == $len) {
           return '';
        } else {
           return ', ';
        }
     }

     protected function pushDate($date) {
          if(!in_array($this->dates)) {
              array_push($this->dates, $date);
          }
     }


     protected function pushLine($line) {                                                                                                                                                 
         array_push($this->line, $line);                                                                                                                                                  
     }                                                                                                                                                                                    
                                                                                                                                                                                          
     protected function formatLine() {                                                                                                                                                    
                                                                                                                                                                                          
         $dates = array_unique($this->dates);                                                                                                                                             
     }                                                                                                                                                                                    
                                                                                                                                                                                          
     protected function combineHtml($html) {                                                                                                                                              
     }                                                                                                                                                                                    
                                                                                                                                                                                          
     protected function iterate() {                                                                                                                                                       
                                                                                                                                                                                          
         $ii = 0;                                                                                                                                                                         
         $len = count($this->data->entry) - 1;                                                                                                                                            
                                                                                                                                                                                          
         foreach ($this->data->entry as $key => $val) {                                                                                                                                   
             $date = $this->formatDate($val->summary);                                                                                                                                    
             $html = $this->formatHtml($val->title, $val->link['href']);                                                                                                                  
             $line = array(                                                                                                                                                               
                 'date' => $date,                                                                                                                                                         
                 'html' => $html,                                                                                                                                                         
                 'end' => $this->formatEndLine($ii, $len)                                                                                                                                 
             );                                                                                                                                                                           
             $this->pushDate($date);                                                                                                                                                      
             $this->pushLine($line);                                                                                                                                                      
             $ii++;                                                                                                                                                                       
         }                                                                                                                                                                                
                                                                                                                                                                                          
     }                                                                                                                                                                                    
                                                                                                                                                                                          
     public function display() {                                                                                                                                                          
         $this->iterate();                                                                                                                                                                
         $this->formatLine();                                                                                                                                                             
     }                                                                                                                                                                                    
                                                                                                                                                                                          
     public function openTags() {                                                                                                                                                         
         return '<script type="text/javascript">                                                                                                                                          
                    var codropsEvents = {';                                                                                                                                               
     }                                                                                                                                                                                    
                                                                                                                                                                                          
     public function closingTags() {                                                                                                                                                      
        return '};                                                                                                                                                                        
                </script>';                                                                                                                                                               
     }                                                                                                                                                                                    
}                                                                                                                                                                                         
                        

// implementation

$feed_url = '';
$cal = new GoogleCal($feed_url);
echo $cal->openTags();
echo $cal->display();
echo $cal->closingTags();
?>