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
WP_Query::parse_query_vars()
Method: Reparse the query vars.
Source: wp-includes/class-wp-query.php:547
WP_Query::set()
Method: Sets the value of a query variable.
Source: wp-includes/class-wp-query.php:1847
WP_Query::fill_query_vars()
Method: Fills in the query variables, which do not exist within the parameter.
Source: wp-includes/class-wp-query.php:560
WP_Query::get_posts()
Method: Retrieves an array of posts based on query variables.
Source: wp-includes/class-wp-query.php:1863
WP_Query::parse_query()
Method: Parse a query string and set query type booleans.
Source: wp-includes/class-wp-query.php:791
pre_get_posts
Action Hook: Fires after the query variable object is created, but before the actual query is run.
Source: wp-includes/class-wp-query.php:1879
parse_query
Action Hook: Fires after the main query vars have been parsed.
Source: wp-includes/class-wp-query.php:1140
posts_search
Filter Hook: Filters the search SQL that is used in the WHERE clause of WP_Query.
Source: wp-includes/class-wp-query.php:2238