WooCommerce: Thêm nút chia sẻ Twitter và Facebook Like không dùng plugin

/**
 * Social Media Buttons - WooCommerce Single Product Page
 * Twitter: https://publish.twitter.com/?buttonType=TweetButton&widget=Button
 * Facebook: https://developers.facebook.com/docs/plugins/like-button/
 */
 
add_action( 'woocommerce_single_product_summary', 'nhutcoder_fb_twitter_single_product', 6 );
function nhutcoder_fb_twitter_single_product() {
    echo '<div>';
    echo '<a href="https://twitter.com/share?ref_src=twsrc%5Etfw" class="twitter-share-button" data-hashtags="apieceofsicily" data-related="apieceofsicily" data-show-count="false">Tweet</a>'; // Tham khảo từ link Twitter docs
    echo '<div class="fb-like" data-href="' . get_permalink() . '" data-width="" data-layout="button_count" data-action="like" data-size="small" data-share="true"></div>'; // Tham khảo từ link Facebook docs, nhưng giữ lại get_permalink()
    echo '</div>';
}
 
add_action( 'wp_footer', 'nhutcoder_twitter_facebook_js', 9999 );
function nhutcoder_twitter_facebook_js() {
    if ( is_product() ) {
        echo '<script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>'; // Tham khảo từ link Twitter docs
        echo '<div id="fb-root"></div><script async defer crossorigin="anonymous" src="https://connect.facebook.net/en_US/sdk.js#xfbml=1&version=v6.0"></script>'; // Tham khảo từ link Facebook docs
    }
}