vietlongn

define( 'FB_COVER_SIZE_NAME', 'fb-cover' );
function custom_theme_setup() {
	add_image_size( FB_COVER_SIZE_NAME, 660, 347, true );
  // more img sizes
}
add_action( 'init', 'custom_theme_setup' );

function lb_image_downsize( $value = false, $post_id, $size = 'medium' )
{
	$arr_size = get_image_size($size);