I don't think it will work on Elgg 2.3 without a thorough code upgrade. The latest version available (1.7) was released for Elgg 1.8 and much has changed since then (first with Elgg 1.9 and then again - a bit less - with Elgg 2.0). Maybe someone will respond who has done the code upgrade but not released a working version. But to be honest I wouldn't have too high hopes. If you need an auction plugin urgently, it might be necessary to hire a developer to do the work. You could also take a look at the plugins available at https://github.com/hypeJunction?tab=repositories. If I remember correctly there were some shopping plugins available there. But I can't say for sure (and not by own experience) if they are fully working or even providing full functionality as they are or are rather a kind of basis that you would have to extend/customize to get a full working solution. Problem with these plugins (like with the auction plugin) is that the developer of the hype* plugin has stopped working further on these plugins (they work on Elgg 2 but in future releases of Elgg like version 3 already they would likely require some updates).

The following code points to thumbnail.php and I thingk that the thumbnail php has an error in it, any help would be much appriciated.

<?php

$wiauctionguid = $vars['wiauctionguid'];
$size =  $vars['size'];

echo "<img src='" . elgg_get_site_url() . "mod/wiAuction/thumbnail.php?wiauctionguid={$wiauctionguid}&size={$size}' class='elgg-photo'>";

when I replace <img src='" . elgg_get_site_url() . "mod/wiAuction/thumbnail.php?wiauctionguid={$wiauctionguid}&size={$size}' class='elgg-photo'> with <img src='https://www.google.co.uk/images/branding/googlelogo/2x/googlelogo_color_272x92dp.png'>, I get the Google image.

When I am not using an image in the aution then the noimage.png image should appear in the auction but the noimage.png does not appear.

thumbnail.php:

In elgg 2.0 engine/start.php does not exist, so the below line is not valid:

require_once(dirname(dirname(dirname(__FILE__))) . "/engine/start.php");

Try replacing it with this:

$autoload_root = dirname(__DIR__);

if (!is_file("$autoload_root/vendor/autoload.php")) {

$autoload_root = dirname($autoload_root);

}

require_once "$autoload_root/vendor/autoload.php";


\Elgg\Application::start();

Thank you very much Rohit Gupta, That worked.

Except the lightbox popup does not display the image, will look in to that.

viewimage.php had the same engine/start.php in it, so replaced:

require_once(dirname(dirname(dirname(__FILE__))) . "/engine/start.php");

with this:

$autoload_root = dirname(__DIR__);
 if (!is_file("$autoload_root/vendor/autoload.php")) {
 $autoload_root = dirname($autoload_root);
 } 
require_once "$autoload_root/vendor/autoload.php";
 \Elgg\Application::start();

Thanks  Rohit Gupta, That also worked.

Now the lightbox popup does display the image.

Had also to tweak the size of the images to display right in the lightbox.

I am glad that it worked.