Get an array of all available active shipping methods from all zones

woocommerce_get_active_shipping_methods.php

<?php
function get_shipping_methods() {
		$active_methods = array();
		$custom_zones = WC_Shipping_Zones::get_zones();
		$worldwide_zone = new WC_Shipping_Zone( 0 );
		$worldwide_methods = $worldwide_zone->get_shipping_methods();

		foreach ( $custom_zones as $zone ) {
			$shipping_methods = $zone['shipping_methods'];
			foreach ($shipping_methods as $shipping_method) {
				if ( isset( $shipping_method->enabled ) && 'yes' === $shipping_method->enabled ) {
					$method_title = $shipping_method->method_title;
					$active_methods[$shipping_method->id.':'.$shipping_method->instance_id] = $method_title.' ('.$zone['zone_name'].')';
				}
			}
		}

		foreach ($worldwide_methods as $shipping_method_id => $shipping_method) {
			if ( isset( $shipping_method->enabled ) && 'yes' === $shipping_method->enabled ) {
				$method_title = $shipping_method->method_title;
				$active_methods[$shipping_method_id.':'.$shipping_method->instance_id] = $method_title.' (Worldwide)';
			}
		}

		return $active_methods;
	}
?>