ClassCounter

ClassCounter.php

<?php
// The ViewHelper
class My_View_Helper_ClassCounter extends Zend_View_Helper_Abstract
{
 
    protected $_registry;
     
    public function __construct()
    {
        $this->_registry = My_View_Helper_ClassCounter_Registry::getRegistry();
    }
    
    public function classCounter($name)
    {
        $name = (string) $name;
        return $this->_registry->getContainer($name);
        
    }
    
   
}


// The Container

<?php 


class My_View_Helper_ClassCounter_Container
{
    protected $_namespace;
    protected $_count = 0;
    protected $_modelCount = 0;
    private $_state = true;
  public function resetCounter()
    {
        $this->_count = 0;
        $this->_modelCount = 0;
        return $this;
    }
    
    public function pauseCounter(){        
        $this->_state = false;
    }
    
    public function incrementCounter(){
            $this->_count++;
    }
    
    public function setCounter($count = 0){
            $this->_count = $count;
    }
    
    
    public function toString()
    {
        $string = "";
        
        if($this->_count == 0) $string .= "first ";
       
        if($this->_count == $this->_modelCount - 1) $string .= " last ";
         if($this->_state) $this->incrementCounter();
        $string .= ((boolean) (int)( $this->_count % 2)) ? " odd " : " even ";
        return (string) trim($string);
    }
    
  	/**
     * Cast to string representation
     *
     * @return string
     */
    public function __toString()
    {
        return $this->toString();
    }
    
    public function setModel($model){
         if(is_array($model)){
             $this->_modelCount = count($model);
         }   elseif(is_numeric($model)){
             $this->_modelCount = $model;
         }   else {
             throw new Zend_Exception("Incorrect Parameter passed to setModel() in My_View_Helper_ClassCounter_Container");
         }
         return $this;
        
    }
    
}


// The Registry 



class My_View_Helper_ClassCounter_Registry
{
   const REGISTRY_KEY = 'My_View_Helper_ClassCounter_Registry';
   protected $_items = array();
   protected $_containerClass = 'My_View_Helper_ClassCounter_Container';
   
   public static function getRegistry()
    {
        if (Zend_Registry::isRegistered(self::REGISTRY_KEY)) {
            $registry = Zend_Registry::get(self::REGISTRY_KEY);
        } else {
            $registry = new self();
            Zend_Registry::set(self::REGISTRY_KEY, $registry);
        }

        return $registry;
    }
    
    public function getContainer($key)
    {
        $key = (string) $key;
        if (isset($this->_items[$key])) {
            return $this->_items[$key];
        }

        $container = $this->createContainer($key);

        return $container;
    }

    public function createContainer($key, array $value = array())
    {
        $key = (string) $key;

        $this->_items[$key] = new $this->_containerClass(array());
        return $this->_items[$key];
    }
    
}