function the_breadcrumb() {

                echo '<ul id="crumbs">';

        if (!is_home()) {

                echo '<li><a href="';

                echo get_option('home');

                echo '">';

                echo 'Trang chủ';

                echo "</a></li>";

                 if (is_category() || is_single()) {

                        echo '<span>›</span><li>';

                        the_category (' </li><li> ');

                        if (is_single()) {

                                echo "</li><span>›</span><li>";

                                the_title();

                                echo '</li>';

                        }

                } elseif (is_page()) {

                        echo '<span>›</span><li>';

                        echo the_title();

                        echo '</li>';

                }

        }

        elseif (is_tag()) {single_tag_title();}

        elseif (is_day()) {echo"<li>Archive for "; the_time('F jS, Y'); echo'</li>';}

        elseif (is_month()) {echo"<li>Archive for "; the_time('F, Y'); echo'</li>';}

        elseif (is_year()) {echo"<li>Archive for "; the_time('Y'); echo'</li>';}

        elseif (is_author()) {echo"<li>Author Archive"; echo'</li>';}

        elseif (isset($_GET['paged']) && !empty($_GET['paged'])) {echo "<li>Blog Archives"; echo'</li>';}

        elseif (is_search()) {echo"<li>Search Results"; echo'</li>';}

        echo '</ul>';

}

Bước 2: Chèn đoạn code sau vào nơi cần hiển thị

<div class="duong_dan_breadcrumb"><?php the_breadcrumb(); ?></div>

Bước 3: Chèn đoạn code CSS vào file Style.css hoặc bạn có thể tự style cho nó.

.duong_dan_breadcrumb{

display: block;

overflow: hidden;

margin: 0;

background: #fff;

line-height: 32px;

padding-top: 5px;

}

.duong_dan_breadcrumb li a{

display: inline-block;

white-space: nowrap;

font-size: 16px;

color: #288ad6; 

padding: 0 10px 0 0;

}

.duong_dan_breadcrumb li{

display: inline-block;

vertical-align: middle;

overflow: hidden;

font-size:16px

}

.duong_dan_breadcrumb span{

display: inline-block;

font-size: 17px;

color: #999; 

line-height: 1;

padding-right: 7px;}