WordPress WooCommerce Snippet that change the text "Add to cart".

oaf_wc_chage_add_to_cart_text.php

<?php
/**
 * This WordPress / Woocommerce code snippet change the "Add to cart" text.
 *
 * Author: Oscar Abad Folgueira
 * Author URI: http://www.oscarabadfolgueira.com
 *
 * You can copy this snippet and paste in your functions.php or you can build your own plugin
 *
 * Change the text for your needs.
 */
 
// change "Add to cart" text in category pages
add_filter( 'woocommerce_product_add_to_cart_text', 'oaf_wc_change_add_to_cart_text' );

// change "Add to cart" text in single product pages
add_filter( 'woocommerce_product_single_add_to_cart_text', 'oaf_wc_change_add_to_cart_text' );

function oaf_wc_change_add_to_cart_text() {
  
  return __('¡Comprar Ya!', 'woocommerce');
}