How to add class to specific TD in view table?
1) click on desire field under 'Fields' in your view

2) select 'Style Settings' 

3) check 'Customize field HTML' checkbox

4) check 'Create a CSS class' checkbox

5) enter 'replace-this-class' in 'CSS class' text field


then you should look into hook_views_post_render - this where you can access the actual html output for each row. if you add a class to the field as described above, you will be able then do php find and replace based on any logic. 

my_module_views_post_render(&amp;$view, &amp;$output, &amp;$cache) {

    foreach ($view -&gt; result as $result) {

        //not sure about that - you would need to debug that
        $result_status = $result -&gt; status; 

        //your php logic and new class assignment
        if($result_status == 1) {
            $class = 'new-class';
        }

        //what you want to replace - again double check that
        $replace = '&lt;td class="replace-this-class';

        //alter `$output` variable
        $output = str_replace($replace, '&lt;td class="'. $class .'"', $output);

    }   

}


This is very ugly but it works. Of course you will need to look into the $output variable to make sure that you are targeting correct html.