Docs4dev
Docs
wordpress / latest / functions / trailingslashit.html

trailingslashit( string $string ): string

Appends a trailing slash.

Description

Will remove trailing forward and backslashes if it exists already before adding a trailing forward slash. This prevents double slashing a string or path.

The primary use of this is for paths and thus should be used for paths. It is not restricted to paths and offers no specific path support.

Parameters

$string string Required
What to add the trailing slash to.

Return

string String with trailing slash added.

Source

File: wp-includes/formatting.php. View all references

function trailingslashit( $string ) {
	return untrailingslashit( $string ) . '/';
}

Uses

Uses Description
untrailingslashit() wp-includes/formatting.php

Removes trailing forward slashes and backslashes if they exist.

Used By

Used By Description
WP_Textdomain_Registry::get_path_from_lang_dir() wp-includes/class-wp-textdomain-registry.php

Gets the path to the language directory for the current locale.
WP_Textdomain_Registry::set() wp-includes/class-wp-textdomain-registry.php

Sets the language directory path for a specific domain and locale.
WP_REST_Global_Styles_Controller::prepare_links() wp-includes/rest-api/endpoints/class-wp-rest-global-styles-controller.php

Prepares links for the request.
WP_REST_Menu_Locations_Controller::prepare_links() wp-includes/rest-api/endpoints/class-wp-rest-menu-locations-controller.php

Prepares links for the request.
WP_REST_Server::match_request_to_handler() wp-includes/rest-api/class-wp-rest-server.php

Matches a request object to its handler.
wp_image_file_matches_image_meta() wp-includes/media.php

Determines if the image meta data is for the image source file.
register_block_type_from_metadata() wp-includes/blocks.php

Registers a block type from the metadata stored in the block.json file.
WP_Site_Health::wp_cron_scheduled_check() wp-admin/includes/class-wp-site-health.php

Runs the scheduled event to check and update the latest site health status for the website.
wp_normalize_site_data() wp-includes/ms-site.php

Normalizes data for a site prior to inserting or updating in the database.
load_script_textdomain() wp-includes/l10n.php

Loads the script translated strings.
wp_privacy_exports_dir() wp-includes/functions.php

Returns the directory used to store personal data export files.
wp_privacy_exports_url() wp-includes/functions.php

Returns the URL of the directory used to store personal data export files.
wp_delete_file_from_directory() wp-includes/functions.php

Deletes a file if its path is within the given directory.
_load_textdomain_just_in_time() wp-includes/l10n.php

Loads plugin and theme text domains just-in-time.
wp_get_canonical_url() wp-includes/link-template.php

Returns the canonical URL for a post.
_wp_upload_dir() wp-includes/functions.php

A non-filtered, non-cached version of wp_upload_dir() that doesn’t check the path.
get_rest_url() wp-includes/rest-api.php

Retrieves the URL to a REST endpoint on a site.
get_post_embed_url() wp-includes/embed.php

Retrieves the URL to embed a specific post in an iframe.
wp_calculate_image_srcset() wp-includes/media.php

A helper function to calculate the image sources to include in a ‘srcset’ attribute.
_upgrade_422_remove_genericons() wp-admin/includes/update-core.php

Cleans up Genericons example files.
network_step2() wp-admin/includes/network.php

Prints step 2 for Network installation process.
Core_Upgrader::upgrade() wp-admin/includes/class-core-upgrader.php

Upgrade WordPress core.
Theme_Upgrader::delete_old_theme() wp-admin/includes/class-theme-upgrader.php

Delete the old theme during an upgrade.
Plugin_Upgrader::check_package() wp-admin/includes/class-plugin-upgrader.php

Checks that the source package contains a valid plugin.
Plugin_Upgrader::delete_old_plugin() wp-admin/includes/class-plugin-upgrader.php

Deletes the old plugin during an upgrade.
Theme_Upgrader::check_package() wp-admin/includes/class-theme-upgrader.php

Checks that the package source contains a valid theme.
WP_Upgrader::install_package() wp-admin/includes/class-wp-upgrader.php

Install a package.
WP_Filesystem_SSH2::cwd() wp-admin/includes/class-wp-filesystem-ssh2.php

Gets the current working directory.
delete_theme() wp-admin/includes/theme.php

Removes a theme.
WP_Filesystem_FTPext::is_dir() wp-admin/includes/class-wp-filesystem-ftpext.php

Checks if resource is a directory.
WP_Filesystem_FTPext::cwd() wp-admin/includes/class-wp-filesystem-ftpext.php

Gets the current working directory.
WP_Filesystem_FTPext::delete() wp-admin/includes/class-wp-filesystem-ftpext.php

Deletes a file or directory.
WP_Filesystem_Base::find_folder() wp-admin/includes/class-wp-filesystem-base.php

Locates a folder on the remote filesystem.
WP_Filesystem_Base::search_for_folder() wp-admin/includes/class-wp-filesystem-base.php

Locates a folder on the remote filesystem.
WP_Filesystem_Direct::delete() wp-admin/includes/class-wp-filesystem-direct.php

Deletes a file or directory.
WP_Filesystem_Direct::chgrp() wp-admin/includes/class-wp-filesystem-direct.php

Changes the file group.
WP_Filesystem_Direct::chmod() wp-admin/includes/class-wp-filesystem-direct.php

Changes filesystem permissions.
delete_plugins() wp-admin/includes/plugin.php

Removes directory and files of a plugin for a list of plugins.
update_core() wp-admin/includes/update-core.php

Upgrades the core of WordPress.
WP_Filesystem_ftpsockets::cwd() wp-admin/includes/class-wp-filesystem-ftpsockets.php

Gets the current working directory.
get_filesystem_method() wp-admin/includes/file.php

Determines which method to use for reading, writing, modifying, or deleting files on the filesystem.
get_home_path() wp-admin/includes/file.php

Gets the absolute filesystem path to the root of the WordPress installation.
list_files() wp-admin/includes/file.php

Returns a listing of all files in the specified folder and all subdirectories up to 100 levels deep.
unzip_file() wp-admin/includes/file.php

Unzips a specified ZIP file to a location on the filesystem via the WordPress Filesystem Abstraction.
copy_dir() wp-admin/includes/file.php

Copies a directory from one location to another via the WordPress Filesystem Abstraction.
paginate_links() wp-includes/general-template.php

Retrieves paginated links for archive post pages.
WP_Theme::scandir() wp-includes/class-wp-theme.php

Scans a directory for files of a certain extension.
wp_old_slug_redirect() wp-includes/query.php

Redirect old slugs to the correct permalink.
get_temp_dir() wp-includes/functions.php

Determines a writable directory for temporary files.
wp_unique_filename() wp-includes/functions.php

Gets a filename that is sanitized and unique for the given directory.
get_comments_pagenum_link() wp-includes/link-template.php

Retrieves the comments page number link.
paginate_comments_links() wp-includes/link-template.php

Displays or retrieves pagination links for the comments on the current post.
get_pagenum_link() wp-includes/link-template.php

Retrieves the link for a page number.
get_post_type_archive_feed_link() wp-includes/link-template.php

Retrieves the permalink for a post type archive feed.
get_term_feed_link() wp-includes/link-template.php

Retrieves the feed link for a term.
get_search_feed_link() wp-includes/link-template.php

Retrieves the permalink for the search results feed.
get_post_comments_feed_link() wp-includes/link-template.php

Retrieves the permalink for the post comments feed.
get_author_feed_link() wp-includes/link-template.php

Retrieves the feed link for a given author.
get_attachment_link() wp-includes/link-template.php

Retrieves the permalink for an attachment.
user_trailingslashit() wp-includes/link-template.php

Retrieves a trailing-slashed string if the site is set for adding trailing slashes.
WP_Admin_Bar::initialize() wp-includes/class-wp-admin-bar.php

Initializes the admin bar.
WP_Image_Editor::get_output_format() wp-includes/class-wp-image-editor.php

Returns preferred mime-type and extension based on provided file’s extension and mime, or current file’s extension and mime.
WP_Image_Editor::generate_filename() wp-includes/class-wp-image-editor.php

Builds an output filename based on current file, and adding proper suffix
plugin_dir_path() wp-includes/plugin.php

Get the filesystem directory path (with trailing slash) for the plugin __FILE__ passed in.
plugin_dir_url() wp-includes/plugin.php

Get the URL directory path (with trailing slash) for the plugin __FILE__ passed in.
_wp_link_page() wp-includes/post-template.php

Helper function for wp_link_pages() .
wp_get_attachment_url() wp-includes/post.php

Retrieves the URL for an attachment.
WP_Rewrite::mod_rewrite_rules() wp-includes/class-wp-rewrite.php

Retrieves mod_rewrite-formatted rewrite rules to write to .htaccess.
url_to_postid() wp-includes/rewrite.php

Examines a URL and try to determine the post ID it represents.
redirect_canonical() wp-includes/canonical.php

Redirects incoming links to the proper URL based on the site url.
redirect_guess_404_permalink() wp-includes/canonical.php

Attempts to guess the correct URL for a 404 request based on query vars.
domain_exists() wp-includes/ms-functions.php

Checks whether a site name is already taken.
get_trackback_url() wp-includes/comment-template.php

Retrieves the current post’s trackback URL.
get_comment_link() wp-includes/comment-template.php

Retrieves the link to a given comment.
weblog_ping() wp-includes/comment.php

Sends a pingback.
_WP_Editors::editor_settings() wp-includes/class-wp-editor.php

Changelog

Version Description
1.2.0 Introduced.

© 2003–2022 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/trailingslashit