Creating Breadcrumbs in wordpress without plugin

 Breadcrumbs are the important part of our website. In WordPress, there are several plugins are available for displaying it. In this post we are giving a code  which you can add to functions.php .

/*=============================================
                BREADCRUMBS
=============================================*/
//  to include in functions.php
function display_breadcrumb()
{
    $showOnHome = 0; // 1 - show breadcrumbs on the homepage, 0 - don't show
    $delimiter = '»'; // delimiter between crumbs
    $home = 'Home'; // text for the 'Home' link
    $showCurrent = 1; // 1 - show current post/page title in breadcrumbs, 0 - don't show
    $before = '<span class="current">'; // tag before the current crumb
    $after = '</span>'; // tag after the current crumb

    global $post;
    $homeLink = get_bloginfo('url');
    if (is_home() || is_front_page()) {
        if ($showOnHome == 1) {
            echo '<div id="crumbs"><a href="' . $homeLink . '">' . $home . '</a></div>';
        }
    } else {
        echo '<div id="crumbs"><a href="' . $homeLink . '">' . $home . '</a> ' . $delimiter . ' ';
        if (is_category()) {
            $thisCat = get_category(get_query_var('cat'), false);
            if ($thisCat->parent != 0) {
                echo get_category_parents($thisCat->parent, true, ' ' . $delimiter . ' ');
            }
            echo $before . 'Archive by category "' . single_cat_title('', false) . '"' . $after;
        } elseif (is_search()) {
            echo $before . 'Search results for "' . get_search_query() . '"' . $after;
        } elseif (is_day()) {
            echo '<a href="' . get_year_link(get_the_time('Y')) . '">' . get_the_time('Y') . '</a> ' . $delimiter . ' ';
            echo '<a href="' . get_month_link(get_the_time('Y'), get_the_time('m')) . '">' . get_the_time('F') . '</a> ' . $delimiter . ' ';
            echo $before . get_the_time('d') . $after;
        } elseif (is_month()) {
            echo '<a href="' . get_year_link(get_the_time('Y')) . '">' . get_the_time('Y') . '</a> ' . $delimiter . ' ';
            echo $before . get_the_time('F') . $after;
        } elseif (is_year()) {
            echo $before . get_the_time('Y') . $after;
        } elseif (is_single() && !is_attachment()) {
            if (get_post_type() != 'post') {
                $post_type = get_post_type_object(get_post_type());
                $slug = $post_type->rewrite;
                echo '<a href="' . $homeLink . '/' . $slug['slug'] . '/">' . $post_type->labels->singular_name . '</a>';
                if ($showCurrent == 1) {
                    echo ' ' . $delimiter . ' ' . $before . get_the_title() . $after;
                }
            } else {
                $cat = get_the_category();
                $cat = $cat[0];
                $cats = get_category_parents($cat, true, ' ' . $delimiter . ' ');
                if ($showCurrent == 0) {
                    $cats = preg_replace("#^(.+)\s$delimiter\s$#", "$1", $cats);
                }
                echo $cats;
                if ($showCurrent == 1) {
                    echo $before . get_the_title() . $after;
                }
            }
        } elseif (!is_single() && !is_page() && get_post_type() != 'post' && !is_404()) {
            $post_type = get_post_type_object(get_post_type());
            echo $before . $post_type->labels->singular_name . $after;
        } elseif (is_attachment()) {
            $parent = get_post($post->post_parent);
            $cat = get_the_category($parent->ID);
            $cat = $cat[0];
            echo get_category_parents($cat, true, ' ' . $delimiter . ' ');
            echo '<a href="' . get_permalink($parent) . '">' . $parent->post_title . '</a>';
            if ($showCurrent == 1) {
                echo ' ' . $delimiter . ' ' . $before . get_the_title() . $after;
            }
        } elseif (is_page() && !$post->post_parent) {
            if ($showCurrent == 1) {
                echo $before . get_the_title() . $after;
            }
        } elseif (is_page() && $post->post_parent) {
            $parent_id  = $post->post_parent;
            $breadcrumbs = array();
            while ($parent_id) {
                $page = get_page($parent_id);
                $breadcrumbs[] = '<a href="' . get_permalink($page->ID) . '">' . get_the_title($page->ID) . '</a>';
                $parent_id  = $page->post_parent;
            }
            $breadcrumbs = array_reverse($breadcrumbs);
            for ($i = 0; $i < count($breadcrumbs); $i++) {
                echo $breadcrumbs[$i];
                if ($i != count($breadcrumbs)-1) {
                    echo ' ' . $delimiter . ' ';
                }
            }
            if ($showCurrent == 1) {
                echo ' ' . $delimiter . ' ' . $before . get_the_title() . $after;
            }
        } elseif (is_tag()) {
            echo $before . 'Posts tagged "' . single_tag_title('', false) . '"' . $after;
        } elseif (is_author()) {
            global $author;
            $userdata = get_userdata($author);
            echo $before . 'Articles posted by ' . $userdata->display_name . $after;
        } elseif (is_404()) {
            echo $before . 'Error 404' . $after;
        }
        if (get_query_var('paged')) {
            if (is_category() || is_day() || is_month() || is_year() || is_search() || is_tag() || is_author()) {
                echo ' (';
            }
            echo __('Page') . ' ' . get_query_var('paged');
            if (is_category() || is_day() || is_month() || is_year() || is_search() || is_tag() || is_author()) {
                echo ')';
            }
        }
        echo '</div>';
    }
} 

and then to display use this code on whatever page you want

<?php if (function_exists('display_breadcrumb')) display_breadcrumb(); ?>