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is_user_logged_in() – Determines whether the current visitor is a logged in user.

is_user_member_of_blog() – Find out whether a user is a member of a given blog.

is_user_option_local() – Check whether a usermeta key has to do with the current blog.

is_user_spammy() – Check to see whether a user is marked as a spammer, based on user login.

Language_Pack_Upgrader

Language_Pack_Upgrader_Skin

Language_Pack_Upgrader_Skin::__construct() –

Language_Pack_Upgrader_Skin::after() –

Language_Pack_Upgrader_Skin::before() –

Language_Pack_Upgrader_Skin::bulk_footer() –

Language_Pack_Upgrader_Skin::error() –

Language_Pack_Upgrader::async_upgrade() – Asynchronously upgrades language packs after other upgrades have been made.

Language_Pack_Upgrader::bulk_upgrade() – Bulk upgrade language packs.

Language_Pack_Upgrader::check_package() – Check the package source to make sure there are .mo and .po files.

Language_Pack_Upgrader::clear_destination() – Clears existing translations where this item is going to be installed into.

Language_Pack_Upgrader::get_name_for_update() – Get the name of an item being updated.

Language_Pack_Upgrader::upgrade_strings() – Initialize the upgrade strings.

Language_Pack_Upgrader::upgrade() – Upgrade a language pack.

links_add_base_url() – Add a Base url to relative links in passed content.

list_core_update() –

list_plugin_updates() – Display the upgrade plugins form.

list_theme_updates() – Display the upgrade themes form.

list_translation_updates() – Display the update translations form.

load-update-core.php – action

load-update.php – action

locale_stylesheet_uri – filter

login_url – filter

logout_url – filter

lostpassword_url – filter

make_ham_user – action

make_spam_user – action

make_undelete_blog – action

make_url_footnote() – Strip HTML and put links at the bottom of stripped content.

manage_users_custom_column – filter

manage_users_extra_tablenav – action

maybe_add_existing_user_to_blog() – Add a new user to a blog by visiting /newbloguser/{key}/.

maybe_convert_table_to_utf8mb4() – If a table only contains utf8 or utf8mb4 columns, convert it to utf8mb4.

maybe_unserialize() – Unserialize value only if it was serialized.

media_handle_upload() – Save a file submitted from a POST request and create an attachment post for it.

media_upload_$tab – action

media_upload_$type – action

media_upload_audio – action

media_upload_audio() – Handles uploading an audio file.

media_upload_default_tab – filter

media_upload_default_type – filter

media_upload_file – action

media_upload_file() – Handles uploading a generic file.

media_upload_flash_bypass() – Displays the multi-file uploader message.

media_upload_form_handler() – Handles form submissions for the legacy media uploader.

media_upload_form_url – filter

media_upload_form() – Outputs the legacy media upload form.

media_upload_gallery – filter

media_upload_gallery_form() – Adds gallery form to upload iframe

media_upload_gallery() – Retrieves the legacy media uploader form in an iframe.

media_upload_header() – Outputs the legacy media upload header.

media_upload_html_bypass() – Displays the browser’s built-in uploader message.

media_upload_image – action

media_upload_image() – Handles uploading an image.

media_upload_library – filter

media_upload_library_form() – Outputs the legacy media upload form for the media library.

media_upload_library() – Retrieves the legacy media library form in an iframe.

media_upload_max_image_resize() – Displays the checkbox to scale images.

media_upload_mime_type_links – filter

media_upload_tabs – filter

media_upload_tabs() – Defines the default media upload tabs

media_upload_text_after() – Used to display a "After a file has been uploaded.

media_upload_type_form() – Outputs the legacy media upload form for a given media type.

media_upload_type_url_form() – Outputs the legacy media upload form for external media.

media_upload_video – action

media_upload_video() – Handles uploading a video file.

menu_page_url() – Get the url to access a particular menu page based on the slug it was registered with.

ms_upload_constants() – Defines Multisite upload constants.

ms_user_list_site_actions – filter

ms_user_list_site_class – filter

ms_user_row_actions – filter

network_admin_url – filter

network_admin_url() – Retrieves the URL to the admin area for the network.

network_home_url – filter

network_home_url() – Retrieves the home URL for the current network.

network_site_new_created_user – action

network_site_url – filter

network_site_url() – Retrieves the site URL for the current network.

network_site_users_after_list_table – action

network_site_users_created_user – action

network_sites_updated_message_$action – filter

network_user_new_created_user – action

network_user_new_form – action

new_user_email_admin_notice() – Adds an admin notice alerting the user to check for confirmation request email after email address change.

new_user_email_content – filter

nonce_user_logged_out – filter

oembed_endpoint_url – filter

oembed_fetch_url – filter

old_slug_redirect_url – filter

option_update_filter() – Refreshes the value of the options whitelist available via the ‘whitelist_options’ hook.

option_users_can_register – filter

override_unload_textdomain – filter

ParagonIE_Sodium_Compat::randombytes_uniform() – Generate an integer between 0 and $range (non-inclusive).

ParagonIE_Sodium_Compat::unpad() –

ParagonIE_Sodium_Compat::use_fallback() – Should we use the libsodium core function instead? This is always a good idea, if it’s available. (Unless we’re in the middle of running our unit test suite.)

ParagonIE_Sodium_Compat::useNewSodiumAPI() – Libsodium as implemented in PHP 7.2 and/or ext/sodium (via PECL)

ParagonIE_Sodium_Core_Base64_UrlSafe

ParagonIE_Sodium_Core_Base64_UrlSafe::decode() – decode from base64 into binary