Determines whether the query has resulted in a 404 (returns no results).
is_year
Determines whether the query is for an existing year archive.
is_trackback
Determines whether the query is for a trackback endpoint call.
is_time
Determines whether the query is for a specific time.
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is_single
Determines whether the query is for an existing single post.
is_singular
Determines whether the query is for an existing single post of any post type (post, attachment, page, custom post types).
is_search
Determines whether the query is for a search.
is_paged
Determines whether the query is for paged results and not for the first page.
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is_page
Determines whether the query is for an existing single page.
is_month
Determines whether the query is for an existing month archive.
is_home
Determines whether the query is for the blog homepage.
is_day
Determines whether the query is for an existing day archive.
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is_feed
Determines whether the query is for a feed.
is_date
Determines whether the query is for an existing date archive.
is_category
Determines whether the query is for an existing category archive page.
