is_network_admin()
Function: Whether the current request is for the network administrative interface.
Source: wp-includes/load.php:871
is_network_only_plugin()
Function: Checks for “Network: true” in the plugin header to see if this should be activated only as a network wide plugin. The plugin would also work when Multisite is not enabled.
Source: wp-admin/includes/plugin.php:571
is_new_day()
Function: Determines whether the publish date of the current post in the loop is different from the publish date of the previous post in the loop.
Source: wp-includes/functions.php:798
is_object_in_taxonomy()
Function: Determine if the given object type is associated with the given taxonomy.
Source: wp-includes/taxonomy.php:4450
is_object_in_term()
Function: Determine if the given object is associated with any of the given terms.
Source: wp-includes/taxonomy.php:4383
is_page()
Function: Determines whether the query is for an existing single page.
Source: wp-includes/query.php:536
is_paged()
Function: Determines whether the query is for paged results and not for the first page.
Source: wp-includes/query.php:560
is_page_template()
Function: Whether currently in a page template.
Source: wp-includes/post-template.php:1720
is_plugin_active()
Function: Determines whether a plugin is active.
Source: wp-admin/includes/plugin.php:506
is_plugin_active_for_network()
Function: Check whether the plugin is active for the entire network.
Source: wp-admin/includes/plugin.php:546
is_plugin_inactive()
Function: Determines whether the plugin is inactive.
Source: wp-admin/includes/plugin.php:525
is_plugin_page()
Function: Determines whether the current admin page is generated by a plugin.
Source: wp-includes/deprecated.php:2526
is_post_type_archive()
Function: Determines whether the query is for an existing post type archive page.
Source: wp-includes/query.php:178
is_post_type_hierarchical()
Function: Whether the post type is hierarchical.
Source: wp-includes/post.php:1115
is_post_type_viewable()
Function: Determines whether a post type is considered “viewable”.
Source: wp-includes/post.php:1890
is_preview()
Function: Is the query for a post or page preview?
Source: wp-includes/query.php:584
is_protected_meta()
Function: Determine whether a meta key is protected.
Source: wp-includes/meta.php:1031
is_random_header_image()
Function: Check if random header image is in use.
Source: wp-includes/theme.php:1214
is_redirect()
Function:
Source: wp-includes/rss.php:699
is_registered_sidebar()
Function: Checks if a sidebar is registered.
Source: wp-includes/widgets.php:308
is_robots()
Function: Is the query for the robots file?
Source: wp-includes/query.php:604
is_rtl()
Function: Determines whether the current locale is right-to-left (RTL).
Source: wp-includes/l10n.php:1528
is_search()
Function: Determines whether the query is for a search.
Source: wp-includes/query.php:628
is_serialized()
Function: Check value to find if it was serialized.
Source: wp-includes/functions.php:463
is_serialized_string()
Function: Check whether serialized data is of string type.
Source: wp-includes/functions.php:529
is_server_error()
Function:
Source: wp-includes/rss.php:711
is_single()
Function: Determines whether the query is for an existing single post.
Source: wp-includes/query.php:661
is_singular()
Function: Determines whether the query is for an existing single post of any post type (post, attachment, page, custom post types).
Source: wp-includes/query.php:693
is_site_admin()
Function: Determine if user is a site admin.
Source: wp-includes/ms-deprecated.php:64
is_site_meta_supported()
Function: Determines whether site meta is enabled.
Source: wp-includes/functions.php:5089