<?php

/**
 * PHP4 Object Model Compatibility 
 * -------------------------------
 *
 * Author: David Grudl
 * Version: 2005-08-24
 *
 * Web: http://www.davidgrudl.com
 *
 * Copyright (c) 2005, David Grudl <david@grudl.com>
 * Licensed under GPL
 */


if (PHP_VERSION < 5) {


    class compatClass4 {


        // new PHP5 constructor
        function __construct()
        {
        }


        // old PHP4 constructor
        function compatClass4()
        {   
            // generate references
            foreach ($this as $key => $foo) 
                // into object (garbage collector friendly method)
                $this->__HIDDEN__[] = & $this->$key;   
                // or into global space (better when using print_r, var_dump)
                // $GLOBALS['__HIDDEN__'][] = & $this->$key; 

            // call php5 constructor
            $args = func_get_args();
            call_user_func_array(array(&$this, '__construct'), $args);
        }

    }
    
    // clone simulation (must be hidden behind PHP5 parser)
    eval('
    function clone($obj)
    {
        unset($obj->__HIDDEN__);
        foreach ($obj as $key => $value) {
                
            // reference to new variable
            $obj->$key = & $value;
            
            // and generate reference - into object or global space, see constructor compatClass4() 
            $obj->__HIDDEN__[] = & $value; 
            // $GLOBALS[\'__HIDDEN__\'][] = & $value;

            unset($value); 
        }
        
        if (is_callable(array(&$obj, \'__clone\'))) $obj->__clone();
        
        return $obj;
    }
    ');


} else { 

    class compatClass4 {}

}


?>