File upload validation

[eluser]pistolPete[/eluser]
PHP4:

Code:

<?php
class Gallery extends Controller{
    var $data;
    function Gallery()
    {
        // initialise the class variable
          $this->data = array();
        ...
    }
    function _do_upload($file)
    {
        ...
          $this->data = $this->upload->data();
    }  
}

PHP5:

Code:

<?php
class Gallery extends Controller{
    private $data;
...

Have a look at php.net.