In case anyone else stumbles across this old question like I just did, it looks like the best way to handle this is using metadata_exists() see https://developer.wordpress.org/reference/functions/metadata_exists/ Here’s what the syntax would be for post meta: metadata_exists(‘post’, $post_id, ‘meta_key_to_check’);
You can use the following instead, if (is_singular(‘post’)) { //your code here… } Where by is_singular is the WordPress API conditional function for testing for the existence of a post type. You can also pass an array of post types if you wish. http://codex.wordpress.org/Function_Reference/is_singular
First you have to get the images. How to get all images of a gallery is described here. WordPress uses two classes for unzipping files. The PHP bilt in ZipArchive() (usage see David Walsh). And PclZip, you can found this class in wp-admin/includes/class-pclzip.php. If you got problems with ZipArchive() try the PclZip class. Now you … Read more
UPDATE December 23 2014 There is a better method using date_query property of WP_Query class: $args = array( ‘post_type’ => ‘post’, ‘tax_query’ => array( array( ‘taxonomy’ => ‘post_format’, ‘field’ => ‘slug’, ‘terms’ => array( ‘post-format-image’ ) ) ), ‘cat’ => ‘-173’, ‘post_status’ => ‘publish’, ‘date_query’ => array( ‘column’ => ‘post_date’, ‘after’ => ‘- 30 days’ … Read more
UPDATE 21-01-2016 19:35 SA TIME – BUG FOUND!!!!! YEAH!!!!!! I finally found the bug. As you stated in your last update, the failure only happens when $post_content has a <!–nextpage–> tag in the content. I tested it, and did confirm that any other page after the page after the <!–nextpage–> returns a 404 and then … Read more
Updating the posts $all_posts = get_posts( ‘posts_per_page’ => -1, ‘post_type’ => ‘post’ ); foreach ( $all_posts as $single ) { wp_update_post( array( ‘ID’ => $single->ID, ‘post_title’ => to_title_case( $single->post_title ) // see function below )); } Converting a string to “Title Case” And, while not pertinent to WP, for the sake of completeness: function to_title_case( … Read more
After reading this thread I saw that I might need this also sometimes. So here is the result: The internal link checker plugin It adds a meta box at your post edit screens that shows links to all posts who link internally to the currently displayed post. If you want to alter the output (add … Read more
This requires PHP 5.3+ (WP requires PHP 5.2.4+) add_filter(‘get_the_excerpt’, ‘end_with_sentence’); function end_with_sentence($excerpt) { $allowed_end = array(‘.’, ‘!’, ‘?’, ‘…’); $exc = explode( ‘ ‘, $excerpt ); $found = false; $last=””; while ( ! $found && ! empty($exc) ) { $last = array_pop($exc); $end = strrev( $last ); $found = in_array( $end{0}, $allowed_end ); } return … Read more
I don’t think there exist one, but you could create your own, wpse_empty_trash, with something like this: /** * Add a custom hook ‘wpse_empty_trash’ */ add_action( ‘load-edit.php’, function() { add_action( ‘before_delete_post’, function ( $post_id ) { if ( ‘trash’ === get_post_status( $post_id ) && filter_input( INPUT_GET, ‘delete_all’ ) && 1 === did_action( ‘before_delete_post ‘ ) … Read more
Out of the box, no, posts can’t have parents. They can be assigned to categories, which can be organised hierarchically. Pages, however, can have parents and you can build a menu structure out of them by using that feature. As to where this is enforced: The parent of a post is stored in the column … Read more