includes_url( string $path = '', string|null $scheme = null )

Retrieves the URL to the includes directory.

Parameters

$path

(string) (Optional) Path relative to the includes URL.

Default value: ''

$scheme

(string|null) (Optional) Scheme to give the includes URL context. Accepts 'http', 'https', or 'relative'.

Default value: null

Return

(string) Includes URL link with optional path appended.

Source

File: wp-includes/link-template.php 

function includes_url( $path = '', $scheme = null ) {
	$url = site_url( '/' . WPINC . '/', $scheme );

	if ( $path && is_string( $path ) ) {
		$url .= ltrim( $path, '/' );
	}

	/**
	 * Filters the URL to the includes directory.
	 *
	 * @since 2.8.0
	 * @since 5.8.0 The `$scheme` parameter was added.
	 *
	 * @param string      $url    The complete URL to the includes directory including scheme and path.
	 * @param string      $path   Path relative to the URL to the wp-includes directory. Blank string
	 *                            if no path is specified.
	 * @param string|null $scheme Scheme to give the includes URL context. Accepts
	 *                            'http', 'https', 'relative', or null. Default null.
	 */
	return apply_filters( 'includes_url', $url, $path, $scheme );
}

Uses

Uses Description
wp-includes/link-template.php: includes_url

Filters the URL to the includes directory.
wp-includes/link-template.php: site_url()

Retrieves the URL for the current site where WordPress application files (e.g. wp-blog-header.php or the wp-admin/ folder) are accessible.
wp-includes/plugin.php: apply_filters()

Calls the callback functions that have been added to a filter hook.

Used By

Used By Description
wp-includes/https-detection.php: wp_is_local_html_output()

Checks whether a given HTML string is likely an output from this WordPress site.
wp-includes/blocks.php: register_block_style_handle()

Finds a style handle for the block metadata field. It detects when a path to file was provided and registers the style under automatically generated handle name. It returns unprocessed style handle otherwise.
wp-includes/functions.php: do_favicon()

Display the favicon.ico file content.
wp-includes/script-loader.php: wp_register_tinymce_scripts()

Registers TinyMCE scripts.
wp-includes/script-loader.php: wp_tinymce_inline_scripts()

Adds inline scripts required for the TinyMCE in the block editor.
wp-includes/class-wp-editor.php: _WP_Editors::get_baseurl()

Returns the TinyMCE base URL.
wp-includes/class-wp-editor.php: _WP_Editors::default_settings()

Returns the default TinyMCE settings.
wp-includes/embed.php: the_embed_site_title()

Prints the necessary markup for the site title in an embed template.
wp-includes/media.php: wpview_media_sandbox_styles()

Returns the URLs for CSS files used in an iframe-sandbox’d TinyMCE media view.
wp-admin/includes/ajax-actions.php: wp_ajax_parse_embed()

Apply [embed] Ajax handlers to a string.
wp-admin/includes/ms.php: _thickbox_path_admin_subfolder()

Thickbox image paths for Network Admin.
wp-includes/formatting.php: translate_smiley()

Convert one smiley code to the icon graphic file equivalent.
wp-includes/general-template.php: wlwmanifest_link()

Display the link to the Windows Live Writer manifest file.
wp-includes/widgets/class-wp-widget-rss.php: WP_Widget_RSS::widget()

Outputs the content for the current RSS widget instance.
wp-includes/post.php: wp_mime_type_icon()

Retrieve the icon for a MIME type or attachment.
wp-includes/script-loader.php: wp_default_scripts()

Register all WordPress scripts.

Changelog

Version Description
2.6.0 Introduced.

© 2003–2021 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/includes_url