WP_Query::is_post_type_archive()
Method: Is the query for an existing post type archive page?
Source: wp-includes/class-wp-query.php:4006
WP_Query::is_preview()
Method: Is the query for a post or page preview?
Source: wp-includes/class-wp-query.php:4455
WP_Query::is_attachment()
Method: Is the query for an existing attachment page?
Source: wp-includes/class-wp-query.php:4033
WP_Query::is_robots()
Method: Is the query for the robots.txt file?
Source: wp-includes/class-wp-query.php:4466
WP_Query::is_author()
Method: Is the query for an existing author archive page?
Source: wp-includes/class-wp-query.php:4071
WP_Query::is_search()
Method: Is the query for a search?
Source: wp-includes/class-wp-query.php:4488
WP_Query::is_category()
Method: Is the query for an existing category archive page?
Source: wp-includes/class-wp-query.php:4110
WP_Query::is_single()
Method: Is the query for an existing single post?
Source: wp-includes/class-wp-query.php:4509
WP_Query::is_tag()
Method: Is the query for an existing tag archive page?
Source: wp-includes/class-wp-query.php:4149
WP_Query::is_singular()
Method: Is the query for an existing single post of any post type (post, attachment, page, custom post types)?
Source: wp-includes/class-wp-query.php:4563