psaikali

function msk_remove_additionalinfo_tab($tabs) {
	unset($tabs['additional_information']);
	$tabs['description']['title'] = __('Details', 'msk');
	$tabs['reviews']['title'] = __( 'Clients reviews', 'msk' );
	
	$tabs['description']['priority'] = 50;
	
	return $tabs;
}
add_filter('woocommerce_product_tabs', 'msk_remove_additionalinfo_tab', 10);

psaikali

<?php
/**
 * "I absolutely love this product" tab
 * yourtheme/woocommerce/single-product/tabs/love-product.php
 * @author        Mosaika
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly
}

psaikali

function msk_add_love_product_tab_content() {
	wc_get_template('single-product/tabs/love-product.php');
}

psaikali

function msk_add_love_product_tab($tabs) {
	
	$tabs['love_tab'] = array(
		'title' 	=> __('Popularity', 'msk'),
		'priority' 	=> 15,
		'callback' 	=> 'msk_add_love_product_tab_content'
	);

	return $tabs;