I've finally figured out how to select and upload multiple files at the same time. I'm very new to Indexhibit but love what it can do and it's simplicity. One of the main features I needed was multi file upload where you can select multiple files at the same time. During my endeavors to rebuild Indexhibit with a real multiple file upload script, I found a stupid simple fix. This fix is simple enough that anyone can do it, but I take no responsibility for this piece of code or what it may or may not do to your site.
After you add this piece of code you need to use an updated browser when you upload files in the back end. This does not mean that everyone who visits your website needs to use an updated browser, because visitors don't upload files. This should work in FireFox, Chrome and Safari. So if you use Internet Explorer, you're out of luck, as usual. Now on to the fun.
Open an FTP and download this file from your site:
"ndxz-studio/module/exhibits/index.php"
You are going to edit one line then re-upload this file to the same place on your site.
Open the "index.php" file in your favorite text editor. Preferably, use a text editor that shows line numbers, I like Scite or Notepad++.
Scroll down to line 604 and it should read the same as the line below. If it doesn't then you need to find this exact line of code.
$body .= "<input id='my_file_element' type='file' name='filename[]'>n";
You need to add ( multiple='') without the parenthesis, right before the triangle bracket (>). Make sure you use two single quotes at the end of multiple= and not a double quote. The new line should look like the code below.
$body .= "<input id='my_file_element' type='file' name='filename[]' multiple=''>n";
So, multiple='' should be right after name='filename[]' like this, name='filename[]' multiple=''
Now save and upload the edited "index.php" file to the same place on your site. You can overwrite the original "index.php" file with the edited file or you can rename the old file and upload the edited one.
Now go to your site, hold down shift and click the refresh button in your browser. This should refresh your site and recreate your browsers cache. Sign in your your site and create a new exhibit or edit an old one.
To upload multiple files, edit an exhibit then click the "Browse" button underneath the text editor box. When you get the file upload dialog, select a file then hold down ctrl or shift and select another file. Click "OK" on the file dialog and you will see only one file name show up in the file name area. Don't worry about the single file name showing up because when you click "Upload" all the files you selected will be uploaded to your site. After clicking the upload button you should see all of the files you selected in the sorting area. Tada! You now have real multiple file upload.