APIs

__return_false() – Returns false.

_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() – Attempts to unzip an archive using the PclZip library.

_unzip_file_ziparchive() – 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.

Akismet_Admin::check_for_spam_button() –

Akismet_Admin::exclude_commentmeta_from_export() – Some commentmeta isn’t useful in an export file. Suppress it (when supported).

Akismet_Admin::jetpack_comment_form_privacy_notice_url() –

Akismet_Admin::set_form_privacy_notice_option() –

akismet_check_for_spam_button() –

akismet_fix_scheduled_recheck() –

akismet_nonce_field() –

akismet_pingback_forwarded_for() –

Akismet_Widget::form() –

Akismet::display_comment_form_privacy_notice() – Controls the display of a privacy related notice underneath the comment form using the `akismet_comment_form_privacy_notice` option and filter respectively.

Akismet::fix_scheduled_recheck() –

Akismet::load_form_js() –

Akismet::pingback_forwarded_for() –

Akismet::print_form_js() –

Akismet::set_form_js_async() – Mark form.js as async. Because nothing depends on it, it can run at any time after it’s loaded, and the browser won’t have to wait for it to load to continue parsing the rest of the 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.

crypto_box_keypair_from_secretkey_and_publickey() –

crypto_box_keypair_from_secretkey_and_publickey() –

crypto_box_publickey_from_secretkey() –

crypto_box_publickey_from_secretkey() –

crypto_generichash_final() –

crypto_generichash_final() –

crypto_sign_publickey_from_secretkey() –

crypto_sign_publickey_from_secretkey() –

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.

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