is_single most likely only works inside of The Loop, and functions.php loads before you’re in The Loop. You could try something like this: add_action( ‘wp_head’, function(){ var_dump(is_single()); }); And now you see that is_single() returns true. EDIT: I was probably off for suggesting it only works inside The Loop, but there’s definitely better places for … Read more
There are several issues with your code. is_front_page() is a PHP function, you need to call it within <?php ?>. The script need to be printed in HTML in order to make it work. Try this.. function wpse_363853_run_on_front() { ?> <script> window.addEventListener(“load”, function() { <?php if( is_front_page() ){ ?> console.log(“front page”); <?php } ?> }); … Read more
Tags don’t create duplicate posts, so the likelihood of them hurting your SEO by appearing in a sitemap are slim. You can add a filter to the return of the taxonomies sitemap to remove tags. This is just a quick attempt I threw together. I haven’t tested it but it should provide a basis to … Read more
Try this if statement instead: if ( is_category() && ( is_category( 59 ) || cat_is_ancestor_of( 59, get_queried_object_id() ) ) ) Update: To work for single posts: if ( is_single() && $terms = get_the_category( get_queried_object_id() ) ) { foreach ( $terms as $term ) { if ( $term->term_id == 59 || cat_is_ancestor_of( 59, $term->term_id ) ) … Read more
I think this would do : if ( is_page( ‘element1.php’ ) || is_404() ) { // do that if page is using template page element1.php or is 404 }
Is your home page blog index or static page? is_home() is meant to check if we are on blog index (latest posts), while is_front_page() checks if home is static page set in Settings > Reading.
instead of echoing your styles anywhere, you can hook your code at wp_head to add it in head or wp_footer to add it in your footer, see if it works for you, function my_custom_style(){ global $post; if ( !empty ( $post->post_name ) && $post->post_name == ‘events’ ){ ?> <style type=”text/css”> #main { background-image: none; } … Read more
You could just alter the main query for your custom post type archive with pre_get_posts(). Code: function wpse124228_alter_ppp_order_for_mycpt( $query ) { if ( ! $query->is_main_query() || is_admin() ) return; if ( is_post_type_archive( ‘mycpt’ ) ) { //Only display 1 post on mycpt archive $query->set( ‘posts_per_page’, 1 ); //Most recent/current $query->set( ‘orderby’, ‘date’ ); $query->set( ‘order’, … Read more
is_single() and is_page() refer to the main query and as far as I know are not altered to match the individual posts in a Loop. They refer to the type of page not to the individual posts. Try and you should see what I mean: $data = array(); $args = array( ‘posts_per_page’ => ‘-1’, ‘post_type’ … Read more
Simply check this by using: if ( $terms && ! is_wp_error( $terms ) ) { //your code } Take a look at the codex page for get_the_terms() for a deeper insight, especially the »Returns« and »Examples« section.