is_subdomain_install()

Whether a subdomain configuration is enabled.

Description

Return

(bool) True if subdomain configuration is enabled, false otherwise.

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Source

File: wp-includes/ms-load.php 

function is_subdomain_install() {
	if ( defined( 'SUBDOMAIN_INSTALL' ) ) {
		return SUBDOMAIN_INSTALL;
	}

	return ( defined( 'VHOST' ) && VHOST == 'yes' );
}

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Changelog

Version Description
3.0.0 Introduced.

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Used By

Used By Description
wp-includes/ms-site.php: wp_initialize_site()

Runs the initialization routine for a given site.
wp-includes/ms-site.php: wp_normalize_site_data()

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

Retrieves the oEmbed response data for a given URL.
wp-signup.php: show_blog_form()

Generates and displays the Signup and Create Site forms
wp-admin/includes/network.php: network_step2()

Prints step 2 for Network installation process.
wp-admin/includes/ms.php: avoid_blog_page_permalink_collision()

Avoids a collision between a site slug and a permalink slug.
wp-admin/includes/class-wp-ms-sites-list-table.php: WP_MS_Sites_List_Table::prepare_items()

Prepares the list of sites for display.
wp-includes/ms-deprecated.php: install_blog()

Install an empty blog.
wp-includes/ms-functions.php: wpmu_validate_blog_signup()

Processes new site registrations.
wp-includes/ms-functions.php: wpmu_signup_blog_notification()

Send a confirmation request email to a user when they sign up for a new site. The new site will not become active until the confirmation link is clicked.
wp-includes/ms-deprecated.php: get_blogaddress_by_domain()

Get a full blog URL, given a domain and a path.
wp-includes/ms-blogs.php: get_blogaddress_by_name()

Get a full blog URL, given a blog name.
wp-includes/ms-blogs.php: get_id_from_blogname()

Retrieves a sites ID given its (subdomain or directory) slug.
wp-includes/ms-blogs.php: get_blog_details()

Retrieve the details for a blog from the blogs table and blog options.
wp-includes/ms-default-constants.php: ms_cookie_constants()

Defines Multisite cookie constants.