thegdshop

<?php

add_filter('single_add_to_cart_text', 'woo_custom_cart_button_text');

function woo_custom_cart_button_text() {

                    return __('My Button Text', 'woocommerce');

            }

thegdshop

<?php

/**
 * Add checkbox field to the checkout
 **/
add_action('woocommerce_after_order_notes', 'my_custom_checkout_field');
 
function my_custom_checkout_field( $checkout ) {
 
    echo '<div id="my-new-field"><h3>'.__('My Checkbox: ').'</h3>';