Code-Snippets-Functions/Execute a function on a child site/WooCommerce/prevent-postcode-zip-field-being-hidden.txt

function filter_woocommerce_get_country_locale( $country_locale ) { 
    // Loop through
    foreach( $country_locale as $key => $locale ) {
        // Isset
        if ( isset ( $locale['postcode']['hidden'] ) ) {
            // When true
            if ( $locale['postcode']['hidden'] == true ) {
                // Set to false
                $country_locale[$key]['postcode']['hidden'] = false;
            }
        }
    }

    return $country_locale;
}
add_filter( 'woocommerce_get_country_locale', 'filter_woocommerce_get_country_locale', 10, 1 );