in_category() WP 1.0
Check if the current post is within any of the given categories.
The given categories are checked against the post's categories' term_ids, names and slugs. Categories given as integers will only be checked against the post's categories' term_ids.
Prior to v2.5 of WordPress, category names were not supported. Prior to v2.7, category slugs were not supported. Prior to v2.7, only one category could be compared: in_category( $single_category ). Prior to v2.7, this function could only be used in the WordPress Loop. As of 2.7, the function can be used anywhere if it is provided a post ID or post object.
For more information on this and similar theme functions, check out the Conditional Tags article in the Theme Developer Handbook.
No Hooks.
Return
true/false. True if the current post is in any of the given categories.
Usage
in_category( $category, $post );
- $category(int/string/array) (required)
- Category ID, name or slug, or array of said.
- $post(int/object)
- Post to check instead of the current post.
Default: null
Changelog
Since 1.2.0 | Introduced. |
Since 2.7.0 | The $post parameter was added. |
Code of in_category() in category WP 5.6
function in_category( $category, $post = null ) {
if ( empty( $category ) ) {
return false;
}
return has_category( $category, $post );
}Related Functions
From tag: Conditional tags (all)
- cat_is_ancestor_of()
- comments_open()
- email_exists()
- has_category()
- has_custom_header()
- has_excerpt()
- has_nav_menu()
- has_post_thumbnail()
- has_shortcode()
- has_tag()
- has_term()
- have_comments()
- have_posts()
- in_the_loop()
- is_404()
- is_active_sidebar()
- is_admin()
- is_admin_bar_showing()
- is_archive()
- is_attachment()
- is_author()
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- is_blog_installed()
- is_category()
- is_child_theme()
- is_comment_feed()
- is_customize_preview()
- is_date()
- is_day()
- is_dynamic_sidebar()
- is_embed()
- is_feed()
- is_front_page()
- is_header_video_active()
- is_home()
- is_local_attachment()
- is_main_query()
- is_month()
- is_multi_author()
- is_multisite()
- is_nav_menu()
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- is_new_day()
- is_page()
- is_page_template()
- is_paged()
- is_plugin_active()
- is_post_type_archive()
- is_post_type_hierarchical()
- is_preview()
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- is_search()
- is_single()
- is_singular()
- is_ssl()
- is_sticky()
- is_tag()
- is_tax()
- is_taxonomy_hierarchical()
- is_textdomain_loaded()
- is_time()
- is_trackback()
- is_user_admin()
- is_user_logged_in()
- is_year()
- pings_open()
- post_exists()
- post_password_required()
- shortcode_exists()
- taxonomy_exists()
- term_exists()
- term_is_ancestor_of()
- wp_attachment_is()
- wp_attachment_is_image()
- wp_doing_ajax()
- wp_doing_cron()
- wp_is_mobile()
- wp_is_post_autosave()
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- wp_script_is()