_close_comments_for_old_post() – Close comments on an old post. Hooked to comments_open and pings_open.
_close_comments_for_old_posts() – Close comments on old posts on the fly, without any extra DB queries. Hooked to the_posts.
_copy_image_file() – Copy an existing image file.
_delete_option_fresh_site() – Delete the fresh site option.
_deprecated_file() – Mark a file as deprecated and inform when it has been used.
_deprecated_function() – Mark a function as deprecated and inform when it has been used.
_fetch_remote_file() – Retrieve URL headers and content using WP HTTP Request API.
_filter_query_attachment_filenames() – Filter the SQL clauses of an attachment query to include filenames.
_find_post_by_old_date() – Find the post ID for redirecting an old date.
_find_post_by_old_slug() – Find the post ID for redirecting an old slug.
_fix_attachment_links() – Replace hrefs of attachment anchors with up-to-date permalinks.
_flip_image_resource() – Flips an image resource. Internal use only.
_future_post_hook() – Hook used to schedule publication for a post marked for the future.
_get_component_from_parsed_url_array() – Retrieve a specific component from a parsed URL array.
_get_plugin_from_callback() – Internal helper function to find the plugin from a meta box callback.
_get_template_edit_filename() – Tidies a filename for url display by the theme editor.
_make_web_ftp_clickable_cb() – Callback to convert URL match to HTML A element.
_oembed_filter_feed_content() – Prepare the oembed HTML to be displayed in an RSS feed.
_post_format_get_term() – Remove the post format prefix from the name property of the term object created by get_term().
_post_format_get_terms() – Remove the post format prefix from the name property of the term objects created by get_terms().
_post_format_link() – Filters the post format term link to remove the format prefix.
_post_format_request() – Filters the request to allow for the format prefix.
_post_format_wp_get_object_terms() – Remove the post format prefix from the name property of the term objects created by wp_get_object_terms().
_preview_theme_stylesheet_filter() – Private function to modify the current stylesheet when previewing a theme
_preview_theme_template_filter() – Private function to modify the current template when previewing a theme
_register_widget_form_callback() – Registers the form callback for a widget.
_reset_front_page_settings_for_post() – Reset the page_on_front, show_on_front, and page_for_post settings when a linked page is deleted or trashed.
_sanitize_text_fields() – Internal helper function to sanitize a string from user input or from the db
_unzip_file_pclzip() – This function should not be called directly, use unzip_file instead. Attempts to unzip an archive using the PclZip library.
_unzip_file_ziparchive() – This function should not be called directly, use unzip_file instead. Attempts to unzip an archive using the ZipArchive class.
_upgrade_422_find_genericons_files_in_folder() – Recursively find Genericons example files in a given folder.
_upgrade_440_force_deactivate_incompatible_plugins() –
_usort_by_first_member() – Sorts a multidimensional array by first member of each top level member
_wp_check_for_scheduled_split_terms() – In order to avoid the _wp_batch_split_terms() job being accidentally removed, check that it’s still scheduled while we haven’t finished splitting terms.
_wp_customize_changeset_filter_insert_post_data() – Filters changeset post data upon insert to ensure post_name is intact.
_WP_Editors::force_uncompressed_tinymce() – Force uncompressed TinyMCE when a custom theme has been defined.
_WP_Editors::wp_fullscreen_html() –
_wp_filter_build_unique_id() – Build Unique ID for storage and retrieval.
_wp_filter_taxonomy_base() – Filters the URL base for taxonomies.
_wp_footer_scripts() – Private, for use in *_footer_scripts hooks
_wp_post_revision_fields() – Determines which fields of posts are to be saved in revisions.
_wp_preview_terms_filter() – Filters terms lookup to set the post format.
_wp_privacy_settings_filter_draft_page_titles() – Appends ‘(Draft)’ to draft page titles in the privacy page dropdown so that unpublished content is obvious.
add_feed() – Add a new feed type like /atom1/.
add_filter() – Hook a function or method to a specific filter action.
add_settings_field() – Add a new field to a section of a settings page
apply_filters_deprecated() – Fires functions attached to a deprecated filter hook.
apply_filters_ref_array() – Execute functions hooked on a specific filter hook, specifying arguments in an array.
apply_filters() – Call the functions added to a filter hook.
automatic_feed_links() – Enable/disable automatic general feed link outputting.
Automatic_Upgrader_Skin::feedback() –
Automatic_Upgrader_Skin::footer() –
Automatic_Upgrader_Skin::request_filesystem_credentials() – Determines whether the upgrader needs FTP/SSH details in order to connect to the filesystem.
bool_from_yn() – Whether input is yes or no.
Bulk_Upgrader_Skin::bulk_footer() –
Bulk_Upgrader_Skin::feedback() –
Bulk_Upgrader_Skin::flush_output() –
Bulk_Upgrader_Skin::footer() –
check_and_publish_future_post() – Publish future post and make sure post ID has future post status.
check_comment_flood_db() – Hooks WP’s native database-based comment-flood check.
codepress_footer_js() – Adds JavaScript required to make CodePress work on the theme/plugin editors.
comment_footer_die() – Display error message at bottom of comments.
comment_form_title() – Display text based on comment reply status.
comment_form() – Outputs a complete commenting form for use within a template.
comment_id_fields() – Output hidden input HTML for replying to comments.
comments_link_feed() – Outputs the link to the comments for the current post in an xml safe way
core_update_footer() –
Core_Upgrader::check_files() – Compare the disk file checksums against the expected checksums.
current_filter() – Retrieve the name of the current filter or action.
current_user_can_for_blog() – Whether current user has a capability or role for a given site.
Custom_Background::attachment_fields_to_edit() –
Custom_Background::filter_upload_tabs() –
Custom_Image_Header::attachment_fields_to_edit() – Unused since 3.5.0.
Custom_Image_Header::filter_upload_tabs() – Unused since 3.5.0.
Custom_Image_Header::finished() – Display last step of custom header image page.
debug_fclose() – Close the debugging file handle.
debug_fopen() – Open the file handle for debugging.
debug_fwrite() – Write contents to the file used for debugging.
display_setup_form() – Display installer setup form.
do_feed_atom() – Load either Atom comment feed or Atom posts feed.
do_feed_rdf() – Load the RDF RSS 0.91 Feed template.
do_feed_rss() – Load the RSS 1.0 Feed Template.
do_feed_rss2() – Load either the RSS2 comment feed or the RSS2 posts feed.
do_feed() – Load the feed template from the use of an action hook.
do_settings_fields() – Print out the settings fields for a particular settings section
doing_filter() – Retrieve the name of a filter currently being processed.
edit_form_image_editor() – Displays the image and editor in the post editor
extract_from_markers() – Extracts strings from between the BEGIN and END markers in the .htaccess file.
favorite_actions() – Favorite actions were deprecated in version 3.2. Use the admin bar instead.
feed_content_type() – Return the content type for specified feed type.
feed_links_extra() – Display the links to the extra feeds such as category feeds.
feed_links() – Display the links to the general feeds.
fetch_feed() – Build SimplePie object based on RSS or Atom feed from URL.
fetch_rss() – Build Magpie object based on RSS from URL.
file_is_displayable_image() – Validate that file is suitable for displaying within a web page.
file_is_valid_image() – Validate that file is an image.
File_Upload_Upgrader::__construct() – Construct the upgrader for a form.
File_Upload_Upgrader::cleanup() – Delete the attachment/uploaded file.
filter_default_option() – Filter the default value for the option.
filter_SSL() – Formats a URL to use https.
find_core_auto_update() – Gets the best available (and enabled) Auto-Update for WordPress Core.
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