TERM METADATA
It's possible to get thumbnails for terms using the new Term Metadata in 4.4. You just also need to define those ahead of time yourself.
CATEGORIES
get_categories ( ) Returns an array of category objects matching the query parameters.
echo "Categories:<br/>";
$args = array(
'orderby' => 'name',
'order' => 'ASC',
'public' => true,
);
$categories = get_categories( $args );
foreach ( $categories as $category ) {
echo '<a href="' . get_category_link( $category ) . '">' . $category->name . '</a><br/>';
}
echo "<hr>"; // divider
TAGS
get_tags ( ) Retrieves an array of objects for each term in post_tag taxonomy.
echo "Tags:<br/>";
$args = array(
'orderby' => 'name',
'order' => 'ASC',
'public' => true,
);
$tags = get_tags( $args );
foreach ( $tags as $tag ) {
echo '<a href="' . get_tag_link( $tag ) . '">' . $tag->name . '</a><br/>';
}
TAXONOMIES
get_taxonomies ( ) Get a list of registered taxonomy objects.
echo "Taxonomies:<br/>";
$args = array(
'_builtin' => false,
'public' => true,
);
$taxonomies = get_taxonomies( $args, 'objects' );
foreach ( $taxonomies as $taxonomy ) {
echo '<p>' . $taxonomy->labels->name . '</p>';
}
POST TYPES
get_post_types ( ) Returns the registered post types as found in $wp_post_types. get_posts ( ) creates an array of posts based on a set of parameters so use it with your post_type_list.
echo "Post Types:<br/>";
$args = array(
'public' => true,
'_builtin' => false,
);
$output = 'names'; // names or objects, note names is the default
$operator = 'and'; // 'and' or 'or'
$post_types = get_post_types($args, $output, $operator);
// get all the posts for all post_types
$posts = get_posts(array(
'post_type' => $post_types,
'numberposts' => - 1,
'orderby' => 'post_type',
'order' => 'ASC',
'post_status' => array( 'publish' ),
'public' => true,
));
foreach($posts as $post) {
$link = get_permalink($post);
$title = $post->post_title;
if($post_type !== $post->post_type) {
$post_type = $post->post_type;
echo '</br/><p>' . $post_type . '</p></br/>';
}
// show link to post
echo "<p><a href=\"$link\">$title</a></p>";
}
TRANSIENT CACHING
If you want to cache the results of all these queries then consider the Transients API. This will store the result into the database for a limited time (which you ~request~). It's not a certain timeframe because plugins like WP Optimize can clear the cache anytime.
// check if the value exists using the key -- if it fails then we'll generate the content
if(false === ($trans_value = get_transient($trans_key = 'my_transient_key'))) {
print_r('NO CACHE FOR ' . $trans_key); // (debug output)
// start the output buffer to capture our generated content
ob_start();
// run your expensive operations -- data sent to the screen will be captured
print_r('This is an expensive operation!');
// using ob_get_clean we'll store the results and set the value variable.
// double check the amount of time you want to keep the data cached
// set to 0 for auto loading on every page hit.
set_transient($trans_key, $trans_value = ob_get_clean(), 1 * MINUTE_IN_SECONDS);
}
else {
print_r('THIS IS A CACHED RESULT FOR ' . $trans_key); // (debug output)
}
// value is ready and cached
print_r("<pre>$trans_value</pre>");
To clear the value just delete using the key.
delete_transient ( $trans_key );
