disable shipping for specific products woocommerce php

functions.php

function hide_shipping_methods( $available_shipping_methods, $package ) {
    $shipping_classes = array( 'some-shipping-class-1', 'some-shipping-class-2' );
    $excluded_methods = array( 'free_shipping' );
    $shipping_class_exists = false;
    foreach( $package['contents'] as $key => $value )
        if ( in_array( $value['data']->get_shipping_class(), $shipping_classes ) ) {
            $shipping_class_exists = true;
            break;
        }
    if ( $shipping_class_exists ) {
        $methods_to_exclude = array();
        foreach( $available_shipping_methods as $method => $method_obj )
            if ( in_array( $method_obj->method_id, $excluded_methods ) )
                $methods_to_exclude[] = $method;
        if ( $methods_to_exclude )
            foreach ( $methods_to_exclude as $method )
                unset( $available_shipping_methods[$method] );
    }
    return $available_shipping_methods;
}
add_filter( 'woocommerce_package_rates', 'hide_shipping_methods', 10, 2 );