';
//global WordPress variable $post. Needed to display multi-page navigations.
global $post, $cat;
//A safe way of getting values for a named option from the options database table.
$homeLink = home_url(); //same as: $homeLink = get_bloginfo('url');
//If you don't like "You are here:", just remove it.
echo '
' . $main . '' . $delimiter;
//Display breadcrumb for single post
if (is_single()) { //check if any single post is being displayed.
//Returns an array of objects, one object for each category assigned to the post.
//This code does not work well (wrong delimiters) if a single post is listed
//at the same time in a top category AND in a sub-category. But this is highly unlikely.
$category = get_the_category();
$num_cat = count($category); //counts the number of categories the post is listed in.
//If you have a single post assigned to one category.
//If you don't set a post to a category, WordPress will assign it a default category.
if ($num_cat <=1) //I put less or equal than 1 just in case the variable is not set (a catch all).
{
echo get_category_parents($category[0], true,' ' . $delimiter . ' ');
//Display the full post title.
echo ' ' . get_the_title();
}
//then the post is listed in more than 1 category.
else {
//Put bullets between categories, since they are at the same level in the hierarchy.
echo the_category( $delimiter1, multiple);
//Display partial post title, in order to save space.
if (strlen(get_the_title()) >= $maxLength) { //If the title is long, then don't display it all.
echo ' ' . $delimiter . trim(substr(get_the_title(), 0, $maxLength)) . ' ...';
}
else { //the title is short, display all post title.
echo ' ' . $delimiter . get_the_title();
}
}
}
//Display breadcrumb for category and sub-category archive
elseif (is_category()) { //Check if Category archive page is being displayed.
//returns the category title for the current page.
//If it is a subcategory, it will display the full path to the subcategory.
//Returns the parent categories of the current category with links separated by '»'
echo 'Kategorie "' . get_category_parents($cat, true,' ' . $delimiter . ' ') . '"' ;
}
//Display breadcrumb for tag archive
elseif ( is_tag() ) { //Check if a Tag archive page is being displayed.
//returns the current tag title for the current page.
echo 'Schlagwort "' . single_tag_title("", false) . '"';
}
//Display breadcrumb for calendar (day, month, year) archive
elseif ( is_day()) { //Check if the page is a date (day) based archive page.
echo '
' . $arc_year . ' ' . $delimiter . ' ';
echo '
' . $arc_month . ' ' . $delimiter . $arc_day . ' (' . $arc_day_full . ')';
}
elseif ( is_month() ) { //Check if the page is a date (month) based archive page.
echo '
' . $arc_year . ' ' . $delimiter . $arc_month;
}
elseif ( is_year() ) { //Check if the page is a date (year) based archive page.
echo $arc_year;
}
//Display breadcrumb for search result page
elseif ( is_search() ) { //Check if search result page archive is being displayed.
echo 'Suchergebnisse für "' . get_search_query() . '"';
}
//Display breadcrumb for top-level pages (top-level menu)
elseif ( is_page() && !$post->post_parent ) { //Check if this is a top Level page being displayed.
echo get_the_title();
}
//Display breadcrumb trail for multi-level subpages (multi-level submenus)
elseif ( is_page() && $post->post_parent ) { //Check if this is a subpage (submenu) being displayed.
//get the ancestor of the current page/post_id, with the numeric ID
//of the current post as the argument.
//get_post_ancestors() returns an indexed array containing the list of all the parent categories.
$post_array = get_post_ancestors($post);
//Sorts in descending order by key, since the array is from top category to bottom.
krsort($post_array);
//Loop through every post id which we pass as an argument to the get_post() function.
//$post_ids contains a lot of info about the post, but we only need the title.
foreach($post_array as $key=>$postid){
//returns the object $post_ids
$post_ids = get_post($postid);
//returns the name of the currently created objects
$title = $post_ids->post_title;
//Create the permalink of $post_ids
echo '
' . $title . '' . $delimiter;
}
the_title(); //returns the title of the current page.
}
//Display breadcrumb for author archive
elseif ( is_author() ) {//Check if an Author archive page is being displayed.
global $author;
//returns the user's data, where it can be retrieved using member variables.
$user_info = get_userdata($author);
echo 'Autor ' . $user_info->display_name ;
}
//Display breadcrumb for 404 Error
elseif ( is_404() ) {//checks if 404 error is being displayed
echo 'Error 404 - Not Found.';
} else {
//All other cases that I missed. No Breadcrumb trail.
}
echo '