Getting minimum order amount for 'Free Shipping' method in checkout page

Question

I have did tried to use the code from this answer:
How to get minimum order amount for free shipping in woocommerce

But it return a NULL

Answer 1

The code of this answer: How to get minimum order amount for free shipping in woocommerce
is obsolete with WooCommerce version 2.6+, but it was helpful for this functional answer…

After making some search and some tries, I have found the way to get the minimum Order amount that is set in the Free Shipping method, for a specific Zone (Region):

Here is the working tested code (explanations are commented inside):

// Here you get (as you already know) the used shipping method reference
$chosen_methods = WC()->session->get( 'chosen_shipping_methods' );

// Replacing inside the string ':' by '_'
$option_value = str_replace(':', '_', $chosen_methods[0]);

// We concatenate the string with additional sub-strings
$option_value = 'woocommerce_'.$option_value.'_settings';

// Just a test => outputting the string to see what we get
echo $option_value; echo '
';

// Now we can get the options values with that formatted string
$free_shipping_settings = get_option( $option_value );

// Just for test => we output the (pre-formatted) array of values to check
echo '
'; print_r($free_shipping_settings); echo '

'; 

// Here we get the value of the order min amount (Finally!)
$order_min_amount = $free_shipping_settings['min_amount'];

// We output the value (to check)
echo 'Order min amount: '.$order_min_amount;

Bingo! you get it.