Show All Categories and their Posts in Wordpress

Would you like to have a page that lists all your post or custom post categories, while displaying each category’s “sub, related or corresponding” posts listed as hyperlinks - with each post link then linking to their respective single post pages.

There are a couple places where displaying categories with this functionality may be useful for your WordPress website:
- On a sitemap style page… ie: “Browse the five latest posts from each category”
- On a footer
- On a WordPress Advanced Search style page
- WordPress Landing Page

$cat_args = array(
  'orderby' => 'name',
  'order' => 'ASC',
  'child_of' => 0
);
$categories =   get_categories($cat_args); 
foreach($categories as $category) { 
    echo '<dl>';
    echo '<dt> <a href="' . get_category_link( $category->term_id ) . '" title="' . sprintf( __( "View all posts in %s" ), $category->name ) . '" ' . '>' . $category->name.'</a></dt>';
     $post_args = array(
      'numberposts' => 5,
      'category' => $category->term_id 
    );
    $posts = get_posts($post_args);
	foreach($posts as $post) {
	?>
		<dd><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></dd>
	<?php 
	} 
	echo '<dd class="view-all"> <a href="' . get_category_link( $category->term_id ) . '" title="' . sprintf( __( "View all posts in %s" ), $category->name ) . '" ' . '>View all posts in ' . $category->name.'</a></dd>';
	echo '</dl>';
}

$cat_args = array(

'orderby' => 'name',

'order' => 'ASC',

'child_of' => 0

);

$categories = get_categories($cat_args);

foreach($categories as $category) {

echo '<dl>';

echo '<dt> <a href="' . get_category_link( $category->term_id ) . '" title="' . sprintf( __( "View all posts in %s" ), $category->name ) . '" ' . '>' . $category->name.'</a></dt>';

$post_args = array(

'numberposts' => 5,

'category' => $category->term_id

);

$posts = get_posts($post_args);

foreach($posts as $post) {

<?php

}

echo '<dd class="view-all"> <a href="' . get_category_link( $category->term_id ) . '" title="' . sprintf( __( "View all posts in %s" ), $category->name ) . '" ' . '>View all posts in ' . $category->name.'</a></dd>';

echo '</dl>';

}

Find more information here

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