jimport not working in Joomla 1.5

I have downloaded some sample code for openId in Joomla 1.5. I am learning as I go with this Joomla thing and re-learning some PHP things. So I'm basically terribly new to this entire Content Manager world. I am trying to make a little plug-in for authentication with openid but it seems to be just wrong.

I have successfully debugged the project in eclipse and found that the error comes from my jimport.

class plgAuthenticationOpenId extends JPlugin{
    /**
     * OpenId Atributes.
     */
    privat开发者_如何学Pythone static $attribute;

    private static $proxyHost;
    private static $proxyPort;
    private static $proxyUser;
    private static $proxyPassword;
    private static $appId;
    private static $appPassword;


function plgAuthenticationOpenId(& $subject, $config){
        parent::__construct($subject, $config);


         plgAuthenticationOpenId::$appId=$this->params->get('userKey', '');
         plgAuthenticationOpenId::$appPassword = $this->params->get('apiKey', '');

        define('Auth_OpenID_RAND_SOURCE', null);

        jimport('openid.consumer'); 
        jimport('openid.Auth.OpenID.AX');

        //Basic Attributes
        plgAuthenticationOpenId::$attribute = array();

        //more code messing with plgAuthenticationOpenId [...]

I have tried to put the library in the php include path, put it in the PEAR path, I have tried the required_once (it brakes there instead of in the jimport), I have tried to jimport the whole path and tried to use include directly. I have also defined the directory separator and the JPATH_BASE. Nothing seems to work.

I think this should have a very easy solution, as I have copy/pasted the code (not created it myself) and is a simple jimport. But nevertheless I’m new to this and stuck. So please, help.

Thanks a lot.

Problem is that jimport('openid.consumer'); changed include_path

Here is a test to demonstrate it.

<?php
// I executed code below in the view to obtain output
var_dump(ini_get('include_path'));
jimport('openid.consumer');
jimport('openid.Auth.OpenID.AX');
var_dump(ini_get('include_path'));

// OUTPUT
string '.:/opt/lampp/lib/php' (length=20)
string '/opt/lampp/htdocs/promark_eblaster/libraries/openid/.:/opt/lampp/lib/php' (length=72)
?>

As you can see the include_path changed.

You can try the following workaround.

<?php 
// Remember the Original Path
$oldPath = ini_get('include_path');

// Include OpenID Stuff
jimport('openid.consumer');
jimport('openid.Auth.OpenID.AX');

// Set back the include_path so Joomla can import files with old include path
ini_set('include_path', $oldPath);

// Check if Success
JFactory::getApplication()->enqueueMessage("Hellow World");

// The rest of your code...
?>