wp_is_internal_link( string $link )

Determines whether or not the specified URL is of a host included in the internal hosts list.


Description

See also


Parameters

$link

(Required) The URL to test.


Return

(bool) Returns true for internal URLs and false for all other URLs.


Source

File: wp-includes/link-template.php

function wp_is_internal_link( $link ) {
	$link = strtolower( $link );
	if ( in_array( wp_parse_url( $link, PHP_URL_SCHEME ), wp_allowed_protocols(), true ) ) {
		return in_array( wp_parse_url( $link, PHP_URL_HOST ), wp_internal_hosts(), true );
	}
	return false;
}


Changelog

Changelog
Version Description
6.2.0 Introduced.