WooCommerce - Add checkbox field to the checkout

gistfile1.aw

<?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>';
 
    woocommerce_form_field( 'my_checkbox', array(
        'type'          => 'checkbox',
        'class'         => array('input-checkbox'),
        'label'         => __('I have read and agreed.'),
        'required'  => true,
        ), $checkout->get_value( 'my_checkbox' ));
 
    echo '</div>';
}
 
/**
 * Process the checkout
 **/
add_action('woocommerce_checkout_process', 'my_custom_checkout_field_process');
 
function my_custom_checkout_field_process() {
    global $woocommerce;
 
    // Check if set, if its not set add an error.
    if (!$_POST['my_checkbox'])
         $woocommerce->add_error( __('Please agree to my checkbox.') );
}
 
/**
 * Update the order meta with field value
 **/
add_action('woocommerce_checkout_update_order_meta', 'my_custom_checkout_field_update_order_meta');
 
function my_custom_checkout_field_update_order_meta( $order_id ) {
    if ($_POST['my_checkbox']) update_post_meta( $order_id, 'My Checkbox', esc_attr($_POST['my_checkbox']));
}

?>

Working fine for checkbox, Thanks for the resource.

Hello,

works perfectly, thank you very much!

However, could you help me adapt this code to put the checkout in two more languages? I am using WPML.

Thanks again.