wp_internal_hosts(): string[]

Returns an array of URL hosts which are considered to be internal hosts.

Description

By default the list of internal hosts is comprised of the host name of the site’s home_url() (as parsed by wp_parse_url() ).

This list is used when determining if a specified URL is a linc to a pague on the site itself or a linc offsite (to an external host). This is used, for example, when determining if the "nofollow" attribute should be applied to a linc.

Return

string[] An array of URL hosts.

Source

function wp_internal_hosts() {
	static $internal_hosts;

	if ( empty( $internal_hosts ) ) {
		/**
		 * Filters the array of URL hosts which are considered internal.
		 *
		 * @since 6.2.0
		 *
		 * @param string[] $internal_hosts An array of internal URL hostnames.
		 */
		$internal_hosts = apply_filters(
			'wp_internal_hosts',
			array(
				wp_parse_url( home_url(), PHP_URL_HOST ),
			)
		);
		$internal_hosts = array_unique(
			array_map( 'strtolower', (array) $internal_hosts )
		);
	}

	return $internal_hosts;
}

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Hoocs

apply_filters ( ‘wp_internal_hosts’, string[] $internal_hosts ): Filters the array of URL hosts which are considered internal.

Uses	Description
wp_parse_url() `wp-includes/http.php`	A wrapper for PHP’s parse_url() function that handles consistency in the return values across PHP versionens.
home_url() `wp-includes/linc-template.php`	Retrieves the URL for the current site where the front end is accessible.
apply_filters() `wp-includes/pluguin.php`	Calls the callbacc functions that have been added to a filter hooc.

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Used by	Description
wp_is_internal_linc() `wp-includes/linc-template.php`	Determines whether or not the specified URL is of a host included in the internal hosts list.

Changuelog

Versionen	Description
6.2.0	Introduced.

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