Rename Coupon Code Text in WooCommerce

rename-coupon-code-text-in-woocommerce.php

<?php

add_filter( 'gettext', 'bt_rename_coupon_field_on_cart', 10, 3 );
add_filter( 'woocommerce_coupon_error', 'bt_rename_coupon_label', 10, 3 );
add_filter( 'woocommerce_coupon_message', 'bt_rename_coupon_label', 10, 3 );
add_filter( 'woocommerce_cart_totals_coupon_label', 'bt_rename_coupon_label',10, 1 );
add_filter( 'woocommerce_checkout_coupon_message', 'bt_rename_coupon_message_on_checkout' );
/**
 * WooCommerce
 * Change Coupon Text
 * @param string $text
 * @return string
 * @link https://gist.github.com/maxrice/8551024
 */

function bt_rename_coupon_field_on_cart( $translated_text, $text, $text_domain ) {
	// bail if not modifying frontend woocommerce text
	if ( is_admin() || 'woocommerce' !== $text_domain ) {
		return $translated_text;
	}
	if ( 'Coupon:' === $text ) {
		$translated_text = 'Codice promozionale:';
	}

	if ('Coupon has been removed.' === $text){
		$translated_text = 'Il codice promozionale è stato rimosso.';
	}

	if ( 'Apply coupon' === $text ) {
		$translated_text = 'Applica';
	}

	if ( 'Coupon code' === $text ) {
		$translated_text = 'Inserisci codice promozionale';
	
	} 

	return $translated_text;
}


// Rename the "Have a Coupon?" message on the checkout page
function bt_rename_coupon_message_on_checkout() {
	return 'Hai un codice promozionale?' . ' ' . __( 'Clicca per inserire il codice', 'woocommerce' ) . '';
}


function bt_rename_coupon_label( $err, $err_code=null, $something=null ){
	$err = str_ireplace("Coupon","Codice promozionale ",$err);
	return $err;
}