<?php 
/**
 * StdClass
 *
 * $Id$
 *
 * @author gERD Schaufelberger <gerd@php-tools.net>
 * @license PHP License
 * @package WB
 * @subpackage base
 */

/**
 * StdClass
 * 
 * Very basic class.
 *
 * @version 0.1.0
 * @package WB
 * @subpackage base
 */
class WBStdClass 
{
   /**
    * list of object ids
    * @see getObjectId()
    * @var array
    */
    static private $_objectIds  =   array();
    
   /**
    * my object id
    * @var string
    */
    protected $_myObjectId = null;
    
   /**
    * to String
    * 
    * @return string
    */
    public function __toString()
    {
        return $this->getObjectId();
    }
    
   /**
    * receive unique id of this object
    * 
    * Loves to use {@link spl_object_hash()} but also provides a 
    * workaround using class name and counter. 
    * 
    * @return string onject id
    */
    public function getObjectId()
    {
        // return cached object id
        if( $this->_myObjectId ) {
            return $this->_myObjectId;
        }
        
        // use SPL function to receive object id
        if( function_exists( 'spl_object_hash' ) ) {
            $this->_myObjectId  =   spl_object_hash( $this );
            return $this->_myObjectId;
        }
        
        /**
         * Start workaround using self::$_objectIds
         * 
         * Build oject id from class name
         * and append static counter
         */
                 
        $clazz = get_class( $this );
        if( !isset( self::$_objectIds[$clazz] ) ) {
            self::$_objectIds[$clazz]   =   0;
        }
        ++self::$_objectIds[$clazz];
        $this->_myObjectId  =   $clazz . ':' . self::$_objectIds[$clazz];
        return $this->_myObjectId;
    }
}
?>