How to restrict WooCommerce shipping zone from certain days of the week - php

Question

I need to hide WooCommerce shipping zone_id=1 & shipping zone_id=3 on Sundays.
I've stumbled upon this answer, and come up with this code:
// Hide $15 & $25 shipping rates on Sunday
add_filter('woocommerce_package_rates', 'amano_hide_shipping_method_on_sunday', 10, 2);
function amano_hide_shipping_method_on_sunday($available_shipping_methods, $package) {
$date = date("1");
$is_sunday = date('l', $date) == 'Sunday';
if($is_sunday) {
$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;
}
}
However, the bit I don't know how to customize is:
$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'
)
);
I don’t have any Shipping Classes, and don’t understand what they are. More code will probably need to be replaced to substitute hiding shipping classes for shipping zones, but I don't know what that code is.
Help appreciated please.

Answer 1

Code contains
On a specific day
Unset $rates[$rate_key] for certain zone IDs
Comment with explanation added to the code
function filter_woocommerce_package_rates( $rates, $package ) {
/* SETTINGS */
// Zone ID's
$hide_zones = array ( 1, 3 );
$on_day = 'Sunday';
/* END SETTINGS */
// Shipping zone
$shipping_zone = wc_get_shipping_zone( $package );
// Get zone ID
$zone_id = $shipping_zone->get_id();
// set the default timezone to use. Available since PHP 5.1
date_default_timezone_set('UTC');
// l - A full textual representation of the day of the week
$day_of_the_week = date( 'l' );
// True
if( $day_of_the_week == $on_day ) {
// In array
if ( in_array( $zone_id, $hide_zones ) ) {
// Loop
foreach ( $rates as $rate_key => $rate ) {
// Unset
unset( $rates[$rate_key] );
}
}
}
return $rates;
}
add_filter( 'woocommerce_package_rates', 'filter_woocommerce_package_rates', 10, 2 );