First you have to find the category ID, which can be done easily with the function get_the_category(). To get the slug, use: $catID = get_the_category(); $catSlug = $catID->slug. To get the link: $catLink = get_category_link($catID).
I’m not quite sure about what you want to do… Maybe it’s this: add_action(‘save_post’, ‘update_thumb’); function update_thumb($post_id) { //verify post is not a revision if (! wp_is_post_revision($post_id)) { $new_value=”testxxx”; update_post_meta($post_id, ‘thumb’, $new_value); } }
You can use both: Comment meta for the plain vote count, because that is easy to fetch with a standard query. A custom table storing additional data to prevent vote fraud and other issues. These tables might be used for rare events (voting) only, but they are not used to list comments in the back-end … Read more
I assume that you want to update custom field. You can use: global $post; update_post_meta($post->ID, $meta_key, $meta_value); http://codex.wordpress.org/Function_Reference/update_post_meta
get_the_author_meta() returns the data for use in PHP. To display the information instead, use the_author_meta() http://codex.wordpress.org/Function_Reference/get_the_author_meta Your code does not echo data even if it is present. Add an echo or use the_author_meta <?php if(get_the_author_meta(‘twitter’) ): ?> <a href=”https://www.twitter.com/<?php echo get_the_author_meta(‘twitter’); ?>” target=”_blank”>Twitter</a></p> <?php else: ?> <strong>No website</strong> <?php endif; ?>
As the content of the meta data is actually a string (according to your comment), your code won’t work. get_post_meta(), respectively get_metadata() will only deserialize the content if it’s actually serialized. So, if you can’t change how the data is saved, ie make sure that an actual array or already serialized content is passed to … Read more
It sounds like you are trying to directly save the altered information to the serialized value in the database. You can’t do that. You have to extract the current meta data for that key so that you have and array or object, update that array or object, and then save the whole thing back to … Read more
get_userdata() – http://codex.wordpress.org/Function_Reference/get_userdata – returns an object. You need to provide the correct return value: echo $name->nicename;
You need to put an exception into your conditional: if(get_post_meta($post->ID, ‘label’, true) != ”){ $label = get_post_meta($post->ID, ‘label’, true); $label=”<em>”.$label.'</em>’; } else { $label=””: }
I can’t test this but it looks like something like what you have should work: if (‘option1’ == get_post_meta($post->ID, ‘item_one’, true)) { //do something } elseif (‘option2’ == get_post_meta($post->ID, ‘item_one’, true)) { //do something else } else { //do something else } You didn’t need all those opening and closing tags, and some of them … Read more