我有这个密码

/* !Hide Shipping Options Woocommerce */

add_filter( 'woocommerce_available_shipping_methods', 'hide_shipping_based_on_tag' ,    10, 1 );

function check_cart_for_share() {

// load the contents of the cart into an array.
global $woocommerce;
$cart = $woocommerce->cart->cart_contents;

$found = false;

// loop through the array looking for the tag you set. Switch to true if the tag is found.
foreach ($cart as $array_item) {
    $term_list = wp_get_post_terms( $array_item['product_id'], 'product_tag', array( "fields" => "names" ) );

    if (in_array("Heavy",$term_list)) { // Replace "Heavy" with what ever tag you want

        $found = true;
        break;
    }
}

return $found;

}

function hide_shipping_based_on_tag( $available_methods ) {

// use the function above to check the cart for the tag.
if ( check_cart_for_share() ) {

    // remove the rate you want
    unset( $available_methods['flat_rate'] ); // Replace "flat_rate" with the shipping option that you want to remove.
}

// return the available methods without the one you unset.
return $available_methods;

}

在我的function.php -但由于woocommerce 2.5它不再工作了。其他运输方式需要隐藏时，免费送货可用。