Conditional tags (all) (tag)
| cat_is_ancestor_of() | Checks if the specified category is a child of another specified category (all nesting levels are checked). Conditional tag. |
| category_exists() | Checks whether a category exists. |
| comments_open() | Whether the current post is open for comments. |
| email_exists() | Checks whether the given email exists. |
| has_block() | Determine whether a $post or a string contains a specific block type. |
| has_category() | Checks whether the current or specified post has at least one of the specified categories. |
| has_custom_header() | Check whether a custom header is set or not. |
| has_excerpt() | Checks if the current post has an excerpt (quote, short description). Conditional tag. |
| has_nav_menu() | Determines whether a registered nav menu location has a menu assigned to it. |
| has_post_thumbnail() | Check if post has an image attached. |
| has_shortcode() | Whether the passed content contains the specified shortcode |
| has_tag() | Checks if the current post has any of the given tags. A conditional tag. |
| has_term() | Checks for the presence of terms in a post, i.e., checks if the post has tags/categories/sections (taking taxonomy into account). |
| have_comments() | Whether there are comments to loop over. |
| have_posts() | Checks if |
| in_category() | Checks whether the current (or specified) post belongs to the specified category (multiple categories can be specified). Conditional tag. |
| in_the_loop() | Determines whether the caller is in The Loop (i.e. whether the loop is currently active). A conditional tag that is used to execute code only inside The Loop. |
| is_404() | Checks whether the 404 error page is displayed (HTTP 404: page not found). Conditional tag. |
| is_active_sidebar() | Whether a sidebar is in use. |
| is_admin() | Whether the current request is for an administrative interface page. |
| is_admin_bar_showing() | Determine whether the admin bar should be showing. |
| is_archive() | Conditional tag. Return true when any of the archive pages are shown (Year, Category, Author, Post Type archive...). |
| is_attachment() | Is the query for an existing attachment page? |
| is_author() | Checks if the author's posts page is displayed. You can specify a specific author. Conditional tag. |
| is_blog_admin() | Whether the current request is for a site's admininstrative interface. |
| is_blog_installed() | Test whether WordPress is already installed. |
| is_category() | Conditional tag. Checks whether the category page is displayed or not. |
| is_child_theme() | Whether a child theme is in use. |
| is_comment_feed() | Is the query for a comments feed? |
| is_customize_preview() | Checks whether the site is being previewed in the WordPress Customizer (the visual theme settings page). Conditional tag. |
| is_date() | Determines whether the date archive page is displayed. Conditional tag. |
| is_day() | Determines whether a day archive page is shown (example.com/2009/08/05) — page with posts for a specific day. A conditional tag. |
| is_dynamic_sidebar() | Whether the dynamic sidebar is enabled and used by theme. |
| is_email() | Verifies that an email is valid. |
| is_embed() | Is the query for an embedded post? |
| is_favicon() | Checks if the current request is a request for the favicon.ico file. |
| is_feed() | Is the query for a feed? |
| is_front_page() | Checks whether the main (home) page of the site is displayed. Conditional tag. |
| is_header_video_active() | Checks whether the custom header video is eligible to show on the current page. |
| is_home() | The conditional tag that checks if the page with the last posts is displayed, usually it is the main page of the site or the blog homepage. |
| is_local_attachment() | Check if the attachment URI is local one and is really an attachment. |
| is_login() | Determines whether the current request is for the login screen. |
| is_main_query() | Is the query the main query? |
| is_month() | Determines whether a monthly archive page is shown (example.com/2009/08) — page with posts for a specific month. A conditional tag. |
| is_multi_author() | Does this site have more than one author |
| is_multisite() | If Multisite is enabled. |
| is_nav_menu() | Check if the given ID is a navigation menu. |
| is_network_admin() | Whether the current request is for the network administrative interface. |
| is_new_day() | Whether the publish date of the current post in the loop is different from the publish date of the previous post in the loop. |
| is_page() | Checks whether a "static page" is displaying. You can specify an ID, name, or page title to check a specific page. Conditional tag. |
| is_page_template() | Checks if the template file is used to display the current page. You can specify the name of the file. |
| is_paged() | Checks whether the pagination page is displayed (page type /page/2, /page/3). Conditional tag. |
| is_plugin_active() | Determines whether a plugin is active. Works in the dashboard only. Conditional tag. |
| is_post_type_archive() | Checks if current user is on the archive page of custom post type. |
| is_post_type_hierarchical() | Checks if the post type is hierarchical. |
| is_preview() | Is the query for a post or page preview? |
| is_robots() | Checks if this is a request to robots.txt file. A conditional tag. |
| is_search() | Works when the search results page is displayed. Conditional tag. |
| is_single() | Checks whether a post page (of any post type) is displayed. Posts with |
| is_singular() | Checks whether the post page is viewed (post, page, attachment, any post type). Conditional Tag. |
| is_ssl() | Checks whether secure HTTPS (SSL) connection is used. A conditional tag. |
| is_sticky() | Checks if the current post is attached to the top of the home page posts query. Conditional tag. |
| is_tag() | Is the query for an existing tag archive page? |
| is_tax() | Works on the custom taxonomy archive page. Conditional tag. |
| is_taxonomy_hierarchical() | Whether the taxonomy object is hierarchical. |
| is_textdomain_loaded() | Whether there are translations for the text domain. |
| is_time() | Determines whether the query is for a time-based archive page (page of posts for the specified time). A conditional tag. |
| is_trackback() | Is the query for a trackback endpoint call? |
| is_user_admin() | Whether the current request is for a user admin screen. |
| is_user_logged_in() | Checks if the current visitor is a logged in user. |
| is_year() | Determines whether a year archive page is shown (example.com/2009) — page with posts for a specific year. A conditional tag. |
| pings_open() | Whether the current post is open for pings. |
| post_exists() | Determine if a post with the specified title (post_title) exists. In addition, for the check, you can pass post_content and post_date. |
| post_password_required() | Whether post requires password and correct password has been provided. |
| shortcode_exists() | Whether a registered shortcode exists named $tag |
| tag_exists() | Checks whether a post tag with a given name exists. |
| taxonomy_exists() | Checks that the taxonomy name exists. |
| term_exists() | Check if a given taxonomy element exists. Returns either term ID or a term data if the element (term) exists. |
| term_is_ancestor_of() | Check if a term is an ancestor of another term. |
| wp_attachment_is() | Verifies an attachment is of a given type. |
| wp_doing_ajax() | Determines whether the current request is a WordPress Ajax request. |
| wp_doing_cron() | Determines whether the current request is a WordPress cron request. |
| wp_is_mobile() | Test if the current browser runs on a mobile device (smart phone, tablet, etc.) |
| wp_is_post_autosave() | Determines if the specified post is an autosave. |
| wp_is_post_revision() | Determines if the specified post is a revision. |
| wp_is_rest_endpoint() | Checks if the current request is a request to the REST API. |
| wp_is_using_https() | Checks whether the website is using HTTPS. |
| wp_script_is() | Check whether a script has been added to the queue. |