tam olarak hangi kısımdan başlayıp hangi kısımda bitirip silmem gerekiyor?

1.
# Post Thumbnails
/*-----------------------------------------------------------------------------------*/
if ( function_exists( 'add_image_size' ) ){
    add_image_size( 'tie-small'        ,110, 75, true );
    add_image_size( 'tie-medium'    ,310, 165, true );
    add_image_size( 'tie-large'        ,310, 205, true );
    add_image_size( 'slider'         ,660, 330, true );
    add_image_size( 'big-slider'    ,1050, 525, true );
}
2.
# tie Thumb SRC
/*-----------------------------------------------------------------------------------*/
function tie_thumb_src( $size = 'tie-small' ){
global $post;
$image_id = get_post_thumbnail_id($post->ID);
$image_url = wp_get_attachment_image_src($image_id, $size );
return $image_url[0];
}