is_admin()
Function: Determines whether the current request is for an administrative interface page.
Source: wp-includes/load.php:1198
is_admin_bar_showing()
Function: Determines whether the admin bar should be showing.
Source: wp-includes/admin-bar.php:1245
is_allowed_http_origin()
Function: Determines if the HTTP origin is an authorized one.
Source: wp-includes/http.php:458
is_archive()
Function: Determines whether the query is for an existing archive page.
Source: wp-includes/query.php:161
is_archived()
Function: Checks if a particular blog is archived.
Source: wp-includes/ms-blogs.php:726
is_attachment()
Function: Determines whether the query is for an existing attachment page.
Source: wp-includes/query.php:213
is_author()
Function: Determines whether the query is for an existing author archive page.
Source: wp-includes/query.php:242
is_avatar_comment_type()
Function: Check if this comment type allows avatars to be retrieved.
Source: wp-includes/link-template.php:4303
is_blog_admin()
Function: Determines whether the current request is for a site’s administrative interface.
Source: wp-includes/load.php:1222
is_blog_installed()
Function: Determines whether WordPress is already installed.
Source: wp-includes/functions.php:1756