Ultimate Guide to WooCommerce Shipping Zones | http://www.ibenic.com/ultimate-guide-woocommerce-shipping-zones

all_zones.php

<?php
function ibenic_get_all_zones() {
	if( class_exists( 'WC_Shipping_Zones' ) ) {
		$all_zones = WC_Shipping_Zones::get_zones();
		return $all_zones;
	}
	return false;
}

all_zones_array.php

<?php

Array
(
  // 52 - Zone ID in database
  [52] => Array
    (
      [zone_id] => 52
      [zone_name] => TISAK Croatia
      [zone_order] => 0
      [zone_locations] => Array
        (
          [0] => stdClass Object
            (
              [code] => HR
              [type] => country
            )

        )

        [meta_data] => Array
          (
          )

        [formatted_zone_location] => Croatia
        [shipping_methods] => Array
          (
            // 18 -> instance_id 
            [18] => WOODEV_TISAK_Shipping Object
              (
                [wc_version] => 2.6.1
                [supports] => Array
                  (
                    [0] => shipping-zones
                    [1] => instance-settings
                  )

               [id] => woodev_tisak_shipping
               [method_title] => TISAK Shipping
                // ... Other Shipping Method definitions
              )
          )
    )
  )

delete_zone.php

<?php

WC_Shipping_Zones::delete_zone( 52 );

example.php

<?php

$available_zones = WC_Shipping_Zones::get_zones();

// Get all WC Countries
$all_countries  = WC()->countries->get_countries();
//Array to store available names
$available_zones_names = array();
// Add each existing zone name into our array
foreach ($available_zones as $zone ) {
	if( !in_array( $zone['zone_name'], $available_zones_names ) ) {
		$available_zones_names[] = $zone['zone_name'];
	}
}

// Check if our zone 'TISAK Croatia' is already there
if( ! in_array( 'TISAK Croatia', $available_zones_names ) ){
	 
	// Instantiate a new shipping zone with our object
	$new_zone_cro = new WC_Shipping_Zone();
	$new_zone_cro->set_zone_name( 'TISAK Croatia');

	// Add Croatia as location
	$new_zone_cro->add_location( 'HR', 'country' );

	// Save the zone, if non existent it will create a new zone
	$new_zone_cro->save();
	// Add our shipping method to that zone
	$new_zone_cro->add_shipping_method( 'woodev_tisak_shipping' );
}

get_shipping_method.php

<?php

// Getting the WOODEV_TISAK_Shipping object
$shipping_method = WC_Shipping_Zones::get_shipping_method( 18 );

get_zone.php

<?php

function ibenic_get_zone( $zone_id = 0 ) {
	if( class_exists( 'WC_Shipping_Zones' ) ) {
		$the_zone = WC_Shipping_Zones::get_zone( $zone_id );
		return $the_zone;
	}
	return false;
}

get_zone_by.php

<?php

$zone = WC_Shipping_Zones::get_zone_by( 'zone_id', 52 );
// $zone = TISAK Croatia
$zone2 = WC_Shipping_Zones::get_zone_by( 'instance_id', 18 );
// $zone2 = TISAK Croatia

gez_zone_by_package.php

<?php

$zone = WC_Shipping_Zones::get_zone_matching_package( $package );

new_zone.php

<?php

$new_zone_object = new WC_Shipping_Zone();
$new_zone_object->set_zone_name( 'My New Zone' );

new_zone_add_location.php

<?php

// Adding United States
$new_zone_object->add_location( 'US', 'country' );

// Adding California, United States
$new_zone_object->add_location( 'US:CA', 'state' );

// Adding Africa
$new_zone_object->add_location( 'AF', 'continent' );

// Adding Postcode
$new_zone_object->add_location( '51000', 'postcode' );

new_zone_add_shipping_method.php

<?php

$new_zone_object->add_shipping_method( 'woodev_tisak_shipping' );

new_zone_clear_locations.php

<?php

// Clear only states
$new_zone_object->clear_locations( array( 'state' ) );

// Clear only state and postcodes
$new_zone_object->clear_locations( array( 'state', 'postcode' ) );

new_zone_delete.php

<?php

$new_zone_object->delete();

new_zone_save.php

<?php

$new_zone_object->save();

new_zone_set_locations.php

<?php

$locations_to_set = array(
   // Setting a Country (United States)
    array(
      'code' => 'US',
      'type' => 'country'
    ),
    // Setting a postcode
    array(
      'code' => '51000',
      'type' => 'postcode'
    ),
    // Setting a state (United States:California)
    array(
      'code' => 'US:CA',
      'type' => 'state'
    ),
    // Setting a continent (Africa)
    array(
      'code' => 'AF',
      'type' => 'continent'
    )
    
  );
$new_zone_object->set_locations( $locations_to_set );