I have a form which collects user info including name, location, url, email address etc etc AND company logo AND appropriate catagories they wish to be associated with (using a checkbox array in $\_POST).

I then display a preview of the page (using $\_SESSION and hidden form fields to hold the $\_POST data) which their data will appear on BEFORE storing it in MySQL with an 'approve' button which links to the PHP page which has the MySQL INSERT query.

The problem i'm having is the preview page in between entry and submission to the database is having trouble with the logo input and the checkbox array input:

```
$_SESSION['clogo'] = $_POST['clogo'];
$_SESSION['cat[]'] = $_POST['cat[]'];

```

I get an 'undefined index' error when i try to preview these, however all other standard input is fine, and is then passed along to the insert mysql query on user approval. In addition, if i skip the 'preview page' and go straight to the insert PHP file from the original form, there is no problem, and all data is entered into the database correctly.

Can anyone help