Need help in JLoader

[web4]

<?php

/**

* @version $Id: loader.php 10381 2008-06-01 03:35:53Z pasamio $

* @package Joomla.Framework

* @copyright Copyright © 2005 - 2008 Open Source Matters. All rights reserved.

* @license GNU/GPL, see LICENSE.php

* Joomla! is free software. This version may have been modified pursuant

* to the GNU General Public License, and as distributed it includes or

* is derivative of works licensed under the GNU General Public License or

* other free or open source software licenses.

* See COPYRIGHT.php for copyright notices and details.

*/

 

if(!defined('DS')) {

define( 'DS', DIRECTORY_SEPARATOR );

}

 

/**

* @package Joomla.Framework

*/

class JLoader

{

/**

* Loads a class from specified directories.

*

* @param string $name The class name to look for ( dot notation ).

* @param string $base Search this directory for the class.

* @param string $key String used as a prefix to denote the full path of the file ( dot notation ).

* @return void

* @since 1.5

*/

function import( $filePath, $base = null, $key = 'libraries.' )

{

static $paths;

 

if (!isset($paths)) {

$paths = array();

}

$keyPath = $key ? $key . $filePath : $filePath;

 

if (!isset($paths[$keyPath]))

{

if ( ! $base ) {

$base =  dirname( __FILE__ );

}

 

$parts = explode( '.', $filePath );

 

$classname = array_pop( $parts );

switch($classname)

{

case 'helper' :

$classname = ucfirst(array_pop( $parts )).ucfirst($classname);

break;

 

default :

$classname = ucfirst($classname);

break;

}

 

$path  = str_replace( '.', DS, $filePath );

           

if (strpos($filePath, 'joomla') === 0)

{

/*

* If we are loading a joomla class prepend the classname with a

* capital J.

*/   

$classname = 'J'.$classname;

$classes = JLoader::register($classname, $base.DS.$path.'.php');

$rs = isset($classes[strtolower($classname)]);

}

else

{

/*

* If it is not in the joomla namespace then we have no idea if

* it uses our pattern for class names/files so just include.

*/ 

$rs  = include($base.DS.$path.'.php');

}

 

$paths[$keyPath] = $rs;

}

 

return $paths[$keyPath];

}

 

/**

* Add a class to autoload

*

* @param string $classname The class name

* @param string $file Full path to the file that holds the class

* @return array|boolean  Array of classes

* @since 1.5

*/             

function & register ($class = null, $file = null)

{ 

static $classes;

 

if(!isset($classes)) {

$classes    = array();

}

     

if($class && is_file($file))

{ 

// Force to lower case.

$class = strtolower($class);

$classes[$class] = $file;

 

// In php4 we load the class immediately.

if((version_compare( phpversion(), '5.0' ) < 0)) {

JLoader::load($class);

}

 

}

       

return $classes;

}

 

 

/**

* Load the file for a class

*

* @access  public

* @param  string  $class  The class that will be loaded

* @return  boolean True on success

* @since  1.5

*/           

function load( $class )

{

$class = strtolower($class); //force to lower case

 

if (class_exists($class)) {

  return;

}

 

$classes = JLoader::register();

if(array_key_exists( strtolower($class), $classes)) {

include($classes[$class]);

return true;

}

return false;

}

}

 

 

/**

* When calling a class that hasn't been defined, __autoload will attempt to

* include the correct file for that class.

*

* This function get's called by PHP. Never call this function yourself.

*

* @param string $class

* @access public

* @return  boolean

* @since  1.5

*/         

function __autoload($class)

{

if(JLoader::load($class)) {

return true;

}

return false;

}

 

/**

* Global application exit.

*

* This function provides a single exit point for the framework.

*

* @param mixed Exit code or string. Defaults to zero.

*/         

function jexit($message = 0) {

    exit($message);

}

 

/**         

* Intelligent file importer

*

* @access public

* @param string $path A dot syntax path

* @since 1.5

*/         

function jimport( $path ) {

return JLoader::import($path);

}

 

 

i have a file new.php

then i use that code....in new.php i wrote the ff lines

 

<?php

 

include("..\Joomla\libraries\loader.php");

 

JLoader::import( 'joomla.base.object' );

 

 

?>

 

then my question is how the file is being loaded with that class?? because 1st it would enter the import function then it would test if (strpos($filePath, 'joomla') === 0)  if it is true then it would also be pass to register function then the register function test if if((version_compare( phpversion(), '5.0' ) < 0)) if it is true then it should load the file...but my question is my phpversion is 5.0.4 then still it's loads the file how could it be?