PHP 5 → 4 converter

Pass object as references (using special trick)
Generate "require_once('php4compat.php4')" if needed

Source PHP 5 script:

Converted PHP 4 script: (download as file)

<?php

// simple PHP 5 script


$GLOBALS['MyClass::$instance'] = NULL; /* class private static property */

define('MYCLASS_ANY_CONST',  10); /* class constant */

class MyClass /* implements iTemplate */
{
    var $b = 'hello world'; /* protected */
   /**
    * Singleton demo
    */
    function singleton() /* static */
    {
        if (!isset($GLOBALS['MyClass::$instance'])) {
            $c = __CLASS__;
            $GLOBALS['MyClass::$instance']= new $c;
        }
        return $GLOBALS['MyClass::$instance'];
    }
}

$test = MyClass::singleton();

?>