hyperframed

add_filter('wp_handle_upload_prefilter','tc_handle_upload_prefilter');
function tc_handle_upload_prefilter($file)
{

    $img=getimagesize($file['tmp_name']);
    $minimum = array('width' => '400', 'height' => '400');
    $width= $img[0];
    $height =$img[1];

    if ($width < $minimum['width'] )