Custom HTML in array (server side)

BNR32

Hi, I'm trying to put in one column custom content like '<img src="image.png"/>' in server side process:

$columns = array(
    array( 'db' => 'first_name', 'dt' => 'first_name' ),
    array( 'db' => 'last_name',  'dt' => 'last_name' ),
    array( 'db' => 'position',   'dt' => 'position' ),
    array( 'db' => 'office',     'dt' => 'office' )
);

Insert one array like:

 ( 'dontknow' => '<img src="image.png"/>', 'dt' => 'image' )

How I can do this?

Thank you very much.

BNR32

Bump.