Custom WooCommerce product tabs from ACF repeater

functions.php

<?php

//see https://gist.github.com/woogists/c15230393ba094d9da33a19a02e20a15 for the general approach to making custom tabs

add_filter( 'woocommerce_product_tabs', 'my_new_product_tabs' );
function my_new_product_tabs( $tabs ) {

    $tabs = array(); //Remove default tabs (optional)

    global $post;
    $product_tabs = get_field('product_tabs',$post->ID); //ACF repeater

    if(!empty($product_tabs)){
        foreach($product_tabs as $index => $tab){

            $name = sanitize_title($tab['title']); //get a 'slug' version of the title
            $title = $tab['title'];

            $tabs[$name] = array(
                'title' 	=> $title,
                'priority' 	=> $index,
                'callback' 	=> 'my_product_tab_content',
                'content' => $tab['content'] //'content' is not a native property in a WC tab, but the whole tab will be passed to the callback function which handles output, so let's send the content along too since we already retrieved it
            );

        }
    }

	return $tabs;

}
function my_product_tab_content($tab_name,$tab) {
    echo apply_filters('the_content', $tab['content']);
}