I think the best option is to use the Woocommerce shipping classes. The bellow code snippet helps you to hide shipping method based on shipping class.
add_filter('woocommerce_package_rates', 'wf_hide_shipping_method_based_on_shipping_class', 10, 2);
function wf_hide_shipping_method_based_on_shipping_class($available_shipping_methods, $package)
{
$hide_when_shipping_class_exist = array(
42 => array(
'free_shipping'
)
);
$hide_when_shipping_class_not_exist = array(
42 => array(
'wf_shipping_ups:03',
'wf_shipping_ups:02',
'wf_shipping_ups:01'
),
43 => array(
'free_shipping'
)
);
$shipping_class_in_cart = array();
foreach(WC()->cart->cart_contents as $key => $values) {
$shipping_class_in_cart[] = $values['data']->get_shipping_class_id();
}
foreach($hide_when_shipping_class_exist as $class_id => $methods) {
if(in_array($class_id, $shipping_class_in_cart)){
foreach($methods as & $current_method) {
unset($available_shipping_methods[$current_method]);
}
}
}
foreach($hide_when_shipping_class_not_exist as $class_id => $methods) {
if(!in_array($class_id, $shipping_class_in_cart)){
foreach($methods as & $current_method) {
unset($available_shipping_methods[$current_method]);
}
}
}
return $available_shipping_methods;
}
[Here][1] is the detailed description about the snippet
[1]: http://support.wooforce.com/hc/en-us/articles/209165585-Hide-Shipping-methods-when-Shipping-classes-exist-do-not-exist-in-cart-
The bellow code snippet allows you hide the shipping methods based on shipping class. Detailed description is available [here][1]
add_filter('woocommerce_package_rates', 'wf_hide_shipping_method_based_on_shipping_class', 10, 2);
function wf_hide_shipping_method_based_on_shipping_class($available_shipping_methods, $package)
{
$hide_when_shipping_class_exist = array(
42 => array(
'free_shipping'
)
);
$hide_when_shipping_class_not_exist = array(
42 => array(
'wf_shipping_ups:03',
'wf_shipping_ups:02',
'wf_shipping_ups:01'
),
43 => array(
'free_shipping'
)
);
$shipping_class_in_cart = array();
foreach(WC()->cart->cart_contents as $key => $values) {
$shipping_class_in_cart[] = $values['data']->get_shipping_class_id();
}
foreach($hide_when_shipping_class_exist as $class_id => $methods) {
if(in_array($class_id, $shipping_class_in_cart)){
foreach($methods as & $current_method) {
unset($available_shipping_methods[$current_method]);
}
}
}
foreach($hide_when_shipping_class_not_exist as $class_id => $methods) {
if(!in_array($class_id, $shipping_class_in_cart)){
foreach($methods as & $current_method) {
unset($available_shipping_methods[$current_method]);
}
}
}
return $available_shipping_methods;
}
[1]: http://support.wooforce.com/hc/en-us/articles/209165585-Hide-Shipping-methods-when-Shipping-classes-exist-do-not-exist-in-cart-
