<?php $tag = get_post_meta($post->ID, ‘wikipedia’, true); ?> <?php if (isset($tag) && $tag != ”) : ?> <a href=”https://wordpress.stackexchange.com/questions/36825/wikipedia.org/wiki/<?php echo $tag; ?>” title=”Wiki this!”>Wikipedia</a> <?php endif; ?> To explain it a bit: First you put the data in a variable, then if the variable has some data, it will show the link and echo the data … Read more
What you’re referring to is serialized data. To save an array to MySQL the data is serialized upon submission, so the best way to read that data is to pull it out of the database with a function that unserializes it, which WordPress does for you. More details So somewhere in a theme or plugin … Read more
You should use WP_Query in this case … $my_query = new WP_Query( array( ‘meta_key’ => ‘XYZ’, ‘meta_value’ => ‘ABC’ ) ); $post_ids = array(); while ( $my_query->have_posts() ) { $my_query->next_post(); $post_ids[] = $my_query->post->ID; } wp_reset_postdata(); … and read on here.
The key to this is covered on the get_posts codex page: Access all post data using the setup_postdata function: foreach ( $rand_posts as $post ) : setup_postdata($post); Regarding the_date, see the note about multiple instances on a page: SPECIAL NOTE: When there are multiple posts on a page published under the SAME DAY, the_date() only … Read more
No need to get Insert id for meta field.You get key value by using this function. $user_some_value = get_user_meta( $user_id, some_key );
The Codex page for the Object Cache class holds the answer to this: By default, the object cache is non-persistent. This means that data stored in the cache resides in memory only and only for the duration of the request. Cached data will not be stored persistently across page loads unless you install a persistent … Read more
I don’t understand your attempt to use PHP_Exec, especially by embedding it in the content section of the page. That is going to run much too late to alter anything in the <head> of the document. Here is the problem you are facing, starting from what looks to be your primary question: So what I … Read more
Custom Fields are perfect for this when you want not different excerpt lenght, but also different excerpt content. Following code will add additional TinyMCE editor to the Edit Post admin page so you can write formatted excerpt specially for your front page. Excerpt will be stored in _wpse83958_front_page_excerpt custom field. Preceding underscore makes it invisible … Read more
There are various ways to achieve this you can either generate metakey value for update_post_meta in such a way that it will contain user id. //Example : global $user_ID,$post_ID; // Store the values update_post_meta($post_ID, ‘meta_key’.$user_ID, ‘$meta_value’); // Get the values $meta_values = get_post_meta($post_ID, ‘meta_key’.$user_ID); or you can save it in user meta as following //Example … Read more
I’m not quite sure about what you want to do… Maybe it’s this: add_action(‘save_post’, ‘update_thumb’); function update_thumb($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); } }