WP_Customize_Manager::is_cross_domain()

Determines whether the admin and the frontend are on different domains.

Return

(bool) Whether cross-domain.

Source

File: wp-includes/class-wp-customize-manager.php 

	public function is_cross_domain() {
		$admin_origin = wp_parse_url( admin_url() );
		$home_origin = wp_parse_url( home_url() );
		$cross_domain = ( strtolower( $admin_origin['host'] ) !== strtolower( $home_origin['host'] ) );
		return $cross_domain;
	}

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Related

Uses

Uses
Uses Description
wp-includes/link-template.php: admin_url()

Retrieves the URL to the admin area for the current site.
wp-includes/link-template.php: home_url()

Retrieves the URL for the current site where the front end is accessible.
wp-includes/http.php: wp_parse_url()

A wrapper for PHP’s parse_url() function that handles consistency in the return values across PHP versions.

Changelog

Changelog
Version Description
WP-4.7.0 Introduced.